EVOLUTION-MANAGER

Edit File: hdf4imagedataset.cpp

/****************************************************************************** * * Project: Hierarchical Data Format Release 4 (HDF4) * Purpose: Read subdatasets of HDF4 file. * This driver initially based on code supplied by Markus Neteler * Author: Andrey Kiselev, dron@ak4719.spb.edu * ****************************************************************************** * Copyright (c) 2002, Andrey Kiselev <dron@ak4719.spb.edu> * Copyright (c) 2009-2013, Even Rouault <even dot rouault at mines-paris dot org> * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. ****************************************************************************/ #if defined(_WIN32) // min/max are defined here on Windows, so block them. // TODO: Move this to someplace more appropriate. # define NOMINMAX #endif #include <string.h> #include <math.h> #include "cpl_multiproc.h" #include "cpl_string.h" #include "gdal_frmts.h" #include "gdal_priv.h" #include "ogr_spatialref.h" #include "hdf.h" #include "mfhdf.h" #include "HdfEosDef.h" #include "hdf4compat.h" #include "hdf4dataset.h" #include "nasakeywordhandler.h" #include <algorithm> CPL_CVSID("$Id: hdf4imagedataset.cpp 36682 2016-12-04 20:34:45Z rouault $"); static const int HDF4_SDS_MAXNAMELEN = 65; extern const char * const pszGDALSignature; // Signature to recognize files written by GDAL. const char * const pszGDALSignature = "Created with GDAL (http://www.remotesensing.org/gdal/)"; extern CPLMutex *hHDF4Mutex; static const int N_BUF_SIZE = 8192; /************************************************************************/ /* ==================================================================== */ /* List of HDF-EOS Swath product types. */ /* ==================================================================== */ /************************************************************************/ enum HDF4EOSProduct { PROD_UNKNOWN, PROD_ASTER_L1A, PROD_ASTER_L1B, PROD_ASTER_L2, PROD_ASTER_L3, PROD_AST14DEM, PROD_MODIS_L1B, PROD_MODIS_L2 }; /************************************************************************/ /* ==================================================================== */ /* HDF4ImageDataset */ /* ==================================================================== */ /************************************************************************/ static const int N_COLOR_ENTRIES = 256; class HDF4ImageDataset : public HDF4Dataset { friend class HDF4ImageRasterBand; char *pszFilename; int32 hHDF4; int32 iGR; int32 iPal; int32 iDataset; int32 iRank; int32 iNumType; int32 nAttrs; int32 iInterlaceMode; int32 iPalInterlaceMode; int32 iPalDataType; int32 nComps; int32 nPalEntries; int32 aiDimSizes[H4_MAX_VAR_DIMS]; int iXDim; int iYDim; int iBandDim; int i4Dim; int nBandCount; char **papszLocalMetadata; uint8 aiPaletteData[N_COLOR_ENTRIES][3]; // XXX: Static array for now char szName[HDF4_SDS_MAXNAMELEN]; char *pszSubdatasetName; char *pszFieldName; GDALColorTable *poColorTable; OGRSpatialReference oSRS; bool bHasGeoTransform; double adfGeoTransform[6]; char *pszProjection; char *pszGCPProjection; GDAL_GCP *pasGCPList; int nGCPCount; HDF4DatasetType iDatasetType; int32 iSDS; int nBlockPreferredXSize; int nBlockPreferredYSize; bool bReadTile; void ToGeoref( double *, double * ); void GetImageDimensions( char * ); void GetSwatAttrs( int32 ); void GetGridAttrs( int32 hGD ); void CaptureNRLGeoTransform(void); void CaptureL1GMTLInfo(void); void CaptureCoastwatchGCTPInfo(void); void ProcessModisSDSGeolocation(void); int ProcessSwathGeolocation( int32, char ** ); static long USGSMnemonicToCode( const char* ); static void ReadCoordinates( const char*, double*, double* ); public: HDF4ImageDataset(); virtual ~HDF4ImageDataset(); static GDALDataset *Open( GDALOpenInfo * ); static GDALDataset *Create( const char * pszFilename, int nXSize, int nYSize, int nBands, GDALDataType eType, char ** papszParmList ); virtual void FlushCache( void ) override; CPLErr GetGeoTransform( double * padfTransform ) override; virtual CPLErr SetGeoTransform( double * ) override; const char *GetProjectionRef() override; virtual CPLErr SetProjection( const char * ) override; virtual int GetGCPCount() override; virtual const char *GetGCPProjection() override; virtual const GDAL_GCP *GetGCPs() override; }; /************************************************************************/ /* ==================================================================== */ /* HDF4ImageRasterBand */ /* ==================================================================== */ /************************************************************************/ class HDF4ImageRasterBand : public GDALPamRasterBand { friend class HDF4ImageDataset; bool bNoDataSet; double dfNoDataValue; bool bHaveScale; bool bHaveOffset; double dfScale; double dfOffset; CPLString osUnitType; public: HDF4ImageRasterBand( HDF4ImageDataset *, int, GDALDataType ); virtual ~HDF4ImageRasterBand() {} virtual CPLErr IReadBlock( int, int, void * ) override; virtual CPLErr IWriteBlock( int, int, void * ) override; virtual GDALColorInterp GetColorInterpretation() override; virtual GDALColorTable *GetColorTable() override; virtual double GetNoDataValue( int * ) override; virtual CPLErr SetNoDataValue( double ) override; virtual double GetOffset( int *pbSuccess ) override; virtual double GetScale( int *pbSuccess ) override; virtual const char *GetUnitType() override; }; /************************************************************************/ /* HDF4ImageRasterBand() */ /************************************************************************/ HDF4ImageRasterBand::HDF4ImageRasterBand( HDF4ImageDataset *poDSIn, int nBandIn, GDALDataType eType ) : bNoDataSet(false), dfNoDataValue(-9999.0), bHaveScale(false), bHaveOffset(false), dfScale(1.0), dfOffset(0.0) { poDS = poDSIn; nBand = nBandIn; eDataType = eType; nBlockXSize = poDSIn->GetRasterXSize(); // Aim for a block of about 1000000 pixels. Chunking up substantially // improves performance in some situations. For now we only chunk up for // SDS and EOS based datasets since other variations haven't been // tested. #2208 if( poDSIn->iDatasetType == HDF4_SDS || poDSIn->iDatasetType == HDF4_EOS) { const int nChunkSize = atoi( CPLGetConfigOption("HDF4_BLOCK_PIXELS", "1000000") ); nBlockYSize = nChunkSize / poDSIn->GetRasterXSize(); nBlockYSize = std::max(1, std::min(nBlockYSize, poDSIn->GetRasterYSize())); } else { nBlockYSize = 1; } // HDF4_EOS:EOS_GRID case. We ensure that the block size matches // the raster width, as the IReadBlock() code can only handle multiple // blocks per row. if( poDSIn->nBlockPreferredXSize == nBlockXSize && poDSIn->nBlockPreferredYSize > 0 ) { if( poDSIn->nBlockPreferredYSize == 1 ) { // Avoid defaulting to tile reading when the preferred height is 1 // as it leads to very poor performance with: // ftp://e4ftl01u.ecs.nasa.gov/MODIS_Composites/MOLT/MOD13Q1.005/2006.06.10/MOD13Q1.A2006161.h21v13.005.2008234103220.hd poDSIn->bReadTile = false; } else { nBlockYSize = poDSIn->nBlockPreferredYSize; } } /* -------------------------------------------------------------------- */ /* We need to avoid using the tile based api if we aren't */ /* matching the tile size. (#4672) */ /* -------------------------------------------------------------------- */ if( nBlockXSize != poDSIn->nBlockPreferredXSize || nBlockYSize != poDSIn->nBlockPreferredYSize ) { poDSIn->bReadTile = false; } } /************************************************************************/ /* IReadBlock() */ /************************************************************************/ CPLErr HDF4ImageRasterBand::IReadBlock( int nBlockXOff, int nBlockYOff, void * pImage ) { CPLAssert( nBlockXOff == 0 ); HDF4ImageDataset *poGDS = reinterpret_cast<HDF4ImageDataset *>( poDS ); CPLMutexHolderD(&hHDF4Mutex); if( poGDS->eAccess == GA_Update ) { memset( pImage, 0, nBlockXSize * nBlockYSize * GDALGetDataTypeSizeBytes(eDataType) ); return CE_None; } /* -------------------------------------------------------------------- */ /* Work out some block oriented details. */ /* -------------------------------------------------------------------- */ const int nYOff = nBlockYOff * nBlockYSize; const int nYSize = std::min(nYOff + nBlockYSize, poDS->GetRasterYSize()) - nYOff; /* -------------------------------------------------------------------- */ /* HDF files with external data files, such as some landsat */ /* products (eg. data/hdf/L1G) need to be told what directory */ /* to look in to find the external files. Normally this is the */ /* directory holding the hdf file. */ /* -------------------------------------------------------------------- */ HXsetdir(CPLGetPath(poGDS->pszFilename)); /* -------------------------------------------------------------------- */ /* Handle different configurations. */ /* -------------------------------------------------------------------- */ CPLErr eErr = CE_None; int32 aiStart[H4_MAX_NC_DIMS] = {}; int32 aiEdges[H4_MAX_NC_DIMS] = {}; switch ( poGDS->iDatasetType ) { case HDF4_SDS: { // We avoid doing SDselect() / SDendaccess() for each block access // as this is very slow when zlib compression is used. if( poGDS->iSDS == FAIL ) poGDS->iSDS = SDselect( poGDS->hSD, poGDS->iDataset ); /* HDF rank: A rank 2 dataset is an image read in scan-line order (2D). A rank 3 dataset is a series of images which are read in an image at a time to form a volume. A rank 4 dataset may be thought of as a series of volumes. The "aiStart" array specifies the multi-dimensional index of the starting corner of the hyperslab to read. The values are zero based. The "edge" array specifies the number of values to read along each dimension of the hyperslab. The "iStride" array allows for sub-sampling along each dimension. If a iStride value is specified for a dimension, that many values will be skipped over when reading along that dimension. Specifying iStride = NULL in the C interface or iStride = 1 in either interface specifies contiguous reading of data. If the iStride values are set to 0, SDreaddata returns FAIL (or -1). No matter what iStride value is provided, data is always placed contiguously in buffer. */ switch ( poGDS->iRank ) { case 4: // 4Dim: volume-time // FIXME: needs sample file. Does not work currently. aiStart[3] = 0; // range: 0--aiDimSizes[3]-1 aiEdges[3] = 1; aiStart[2] = 0; // range: 0--aiDimSizes[2]-1 aiEdges[2] = 1; aiStart[1] = nYOff; aiEdges[1] = nYSize; aiStart[0] = nBlockXOff; aiEdges[0] = nBlockXSize; break; case 3: // 3Dim: volume aiStart[poGDS->iBandDim] = nBand - 1; aiEdges[poGDS->iBandDim] = 1; aiStart[poGDS->iYDim] = nYOff; aiEdges[poGDS->iYDim] = nYSize; aiStart[poGDS->iXDim] = nBlockXOff; aiEdges[poGDS->iXDim] = nBlockXSize; break; case 2: // 2Dim: rows/cols aiStart[poGDS->iYDim] = nYOff; aiEdges[poGDS->iYDim] = nYSize; aiStart[poGDS->iXDim] = nBlockXOff; aiEdges[poGDS->iXDim] = nBlockXSize; break; case 1: //1Dim: aiStart[poGDS->iXDim] = nBlockXOff; aiEdges[poGDS->iXDim] = nBlockXSize; break; } // Read HDF SDS array if( SDreaddata( poGDS->iSDS, aiStart, NULL, aiEdges, pImage ) < 0 ) { CPLError( CE_Failure, CPLE_AppDefined, "SDreaddata() failed for block." ); eErr = CE_Failure; } //SDendaccess( l_iSDS ); } break; case HDF4_GR: { const int nDataTypeSize = GDALGetDataTypeSizeBytes(poGDS->GetDataType(poGDS->iNumType)); GByte *pbBuffer = reinterpret_cast<GByte *>( CPLMalloc(nBlockXSize*nBlockYSize*poGDS->iRank*nBlockYSize) ); aiStart[poGDS->iYDim] = nYOff; aiEdges[poGDS->iYDim] = nYSize; aiStart[poGDS->iXDim] = nBlockXOff; aiEdges[poGDS->iXDim] = nBlockXSize; if( GRreadimage(poGDS->iGR, aiStart, NULL, aiEdges, pbBuffer) < 0 ) { CPLError( CE_Failure, CPLE_AppDefined, "GRreaddata() failed for block." ); eErr = CE_Failure; } else { for ( int i = 0, j = (nBand - 1) * nDataTypeSize; i < nBlockXSize * nDataTypeSize; i += nDataTypeSize, j += poGDS->nBands * nDataTypeSize ) memcpy( reinterpret_cast<GByte *>( pImage ) + i, pbBuffer + j, nDataTypeSize ); } CPLFree( pbBuffer ); } break; case HDF4_EOS: { switch ( poGDS->iSubdatasetType ) { case H4ST_EOS_GRID: { const int32 hGD = GDattach( poGDS->hHDF4, poGDS->pszSubdatasetName ); switch ( poGDS->iRank ) { case 4: // 4Dim: volume aiStart[poGDS->i4Dim] = (nBand - 1) / poGDS->aiDimSizes[poGDS->iBandDim]; aiEdges[poGDS->i4Dim] = 1; aiStart[poGDS->iBandDim] = (nBand - 1) % poGDS->aiDimSizes[poGDS->iBandDim]; aiEdges[poGDS->iBandDim] = 1; aiStart[poGDS->iYDim] = nYOff; aiEdges[poGDS->iYDim] = nYSize; aiStart[poGDS->iXDim] = nBlockXOff; aiEdges[poGDS->iXDim] = nBlockXSize; break; case 3: // 3Dim: volume aiStart[poGDS->iBandDim] = nBand - 1; aiEdges[poGDS->iBandDim] = 1; aiStart[poGDS->iYDim] = nYOff; aiEdges[poGDS->iYDim] = nYSize; aiStart[poGDS->iXDim] = nBlockXOff; aiEdges[poGDS->iXDim] = nBlockXSize; break; case 2: // 2Dim: rows/cols aiStart[poGDS->iYDim] = nYOff; aiEdges[poGDS->iYDim] = nYSize; aiStart[poGDS->iXDim] = nBlockXOff; aiEdges[poGDS->iXDim] = nBlockXSize; break; } /* Ensure that we don't overlap the bottom or right edges */ /* of the dataset in order to use the GDreadtile() API */ if( poGDS->bReadTile && (nBlockXOff + 1) * nBlockXSize <= nRasterXSize && (nBlockYOff + 1) * nBlockYSize <= nRasterYSize ) { int32 tilecoords[] = { nBlockYOff , nBlockXOff }; if( GDreadtile( hGD, poGDS->pszFieldName, tilecoords, pImage ) != 0 ) { CPLError( CE_Failure, CPLE_AppDefined, "GDreadtile() failed for block." ); eErr = CE_Failure; } } else if( GDreadfield( hGD, poGDS->pszFieldName, aiStart, NULL, aiEdges, pImage ) < 0 ) { CPLError( CE_Failure, CPLE_AppDefined, "GDreadfield() failed for block." ); eErr = CE_Failure; } GDdetach( hGD ); } break; case H4ST_EOS_SWATH: case H4ST_EOS_SWATH_GEOL: { const int32 hSW = SWattach( poGDS->hHDF4, poGDS->pszSubdatasetName ); switch ( poGDS->iRank ) { case 3: // 3Dim: volume aiStart[poGDS->iBandDim] = nBand - 1; aiEdges[poGDS->iBandDim] = 1; aiStart[poGDS->iYDim] = nYOff; aiEdges[poGDS->iYDim] = nYSize; aiStart[poGDS->iXDim] = nBlockXOff; aiEdges[poGDS->iXDim] = nBlockXSize; break; case 2: // 2Dim: rows/cols aiStart[poGDS->iYDim] = nYOff; aiEdges[poGDS->iYDim] = nYSize; aiStart[poGDS->iXDim] = nBlockXOff; aiEdges[poGDS->iXDim] = nBlockXSize; break; } if( SWreadfield( hSW, poGDS->pszFieldName, aiStart, NULL, aiEdges, pImage ) < 0 ) { CPLError( CE_Failure, CPLE_AppDefined, "SWreadfield() failed for block." ); eErr = CE_Failure; } SWdetach( hSW ); } break; default: break; } } break; default: eErr = CE_Failure; break; } return eErr; } /************************************************************************/ /* IWriteBlock() */ /************************************************************************/ CPLErr HDF4ImageRasterBand::IWriteBlock( int nBlockXOff, int nBlockYOff, void * pImage ) { CPLAssert( nBlockXOff == 0 ); CPLAssert( nBlockYOff >= 0 ); CPLAssert( pImage != NULL ); HDF4ImageDataset *poGDS = reinterpret_cast<HDF4ImageDataset *>( poDS ); CPLAssert( poGDS != NULL ); int32 aiStart[H4_MAX_NC_DIMS] = {}; int32 aiEdges[H4_MAX_NC_DIMS] = {}; CPLErr eErr = CE_None; CPLMutexHolderD(&hHDF4Mutex); /* -------------------------------------------------------------------- */ /* Work out some block oriented details. */ /* -------------------------------------------------------------------- */ const int nYOff = nBlockYOff * nBlockYSize; const int nYSize = std::min(nYOff + nBlockYSize, poDS->GetRasterYSize()) - nYOff; /* -------------------------------------------------------------------- */ /* Process based on rank. */ /* -------------------------------------------------------------------- */ switch ( poGDS->iRank ) { case 3: { const int32 l_iSDS = SDselect( poGDS->hSD, poGDS->iDataset ); aiStart[poGDS->iBandDim] = nBand - 1; aiEdges[poGDS->iBandDim] = 1; aiStart[poGDS->iYDim] = nYOff; aiEdges[poGDS->iYDim] = nYSize; aiStart[poGDS->iXDim] = nBlockXOff; aiEdges[poGDS->iXDim] = nBlockXSize; if( (SDwritedata( l_iSDS, aiStart, NULL, aiEdges, (VOIDP)pImage )) < 0 ) eErr = CE_Failure; SDendaccess( l_iSDS ); } break; case 2: { const int32 l_iSDS = SDselect( poGDS->hSD, nBand - 1 ); aiStart[poGDS->iYDim] = nYOff; aiEdges[poGDS->iYDim] = nYSize; aiStart[poGDS->iXDim] = nBlockXOff; aiEdges[poGDS->iXDim] = nBlockXSize; if( (SDwritedata( l_iSDS, aiStart, NULL, aiEdges, (VOIDP)pImage )) < 0 ) eErr = CE_Failure; SDendaccess( l_iSDS ); } break; default: eErr = CE_Failure; break; } return eErr; } /************************************************************************/ /* GetColorTable() */ /************************************************************************/ GDALColorTable *HDF4ImageRasterBand::GetColorTable() { HDF4ImageDataset *poGDS = reinterpret_cast<HDF4ImageDataset *>( poDS ); return poGDS->poColorTable; } /************************************************************************/ /* GetColorInterpretation() */ /************************************************************************/ GDALColorInterp HDF4ImageRasterBand::GetColorInterpretation() { HDF4ImageDataset *poGDS = reinterpret_cast<HDF4ImageDataset *>( poDS ); if( poGDS->iDatasetType == HDF4_SDS ) { return GCI_GrayIndex; } else if( poGDS->iDatasetType == HDF4_GR ) { if( poGDS->poColorTable != NULL ) { return GCI_PaletteIndex; } else if( poGDS->nBands != 1 ) { if( nBand == 1 ) return GCI_RedBand; else if( nBand == 2 ) return GCI_GreenBand; else if( nBand == 3 ) return GCI_BlueBand; else if( nBand == 4 ) return GCI_AlphaBand; else return GCI_Undefined; } else { return GCI_GrayIndex; } } return GCI_GrayIndex; } /************************************************************************/ /* GetNoDataValue() */ /************************************************************************/ double HDF4ImageRasterBand::GetNoDataValue( int * pbSuccess ) { if( pbSuccess ) *pbSuccess = bNoDataSet; return dfNoDataValue; } /************************************************************************/ /* SetNoDataValue() */ /************************************************************************/ CPLErr HDF4ImageRasterBand::SetNoDataValue( double dfNoData ) { bNoDataSet = true; dfNoDataValue = dfNoData; return CE_None; } /************************************************************************/ /* GetUnitType() */ /************************************************************************/ const char *HDF4ImageRasterBand::GetUnitType() { if( !osUnitType.empty() ) return osUnitType; return GDALRasterBand::GetUnitType(); } /************************************************************************/ /* GetOffset() */ /************************************************************************/ double HDF4ImageRasterBand::GetOffset( int *pbSuccess ) { if( bHaveOffset ) { if( pbSuccess != NULL ) *pbSuccess = TRUE; return dfOffset; } return GDALRasterBand::GetOffset( pbSuccess ); } /************************************************************************/ /* GetScale() */ /************************************************************************/ double HDF4ImageRasterBand::GetScale( int *pbSuccess ) { if( bHaveScale ) { if( pbSuccess != NULL ) *pbSuccess = TRUE; return dfScale; } return GDALRasterBand::GetScale( pbSuccess ); } /************************************************************************/ /* ==================================================================== */ /* HDF4ImageDataset */ /* ==================================================================== */ /************************************************************************/ /************************************************************************/ /* HDF4ImageDataset() */ /************************************************************************/ HDF4ImageDataset::HDF4ImageDataset() : pszFilename(NULL), hHDF4(0), iGR(0), iPal(0), iDataset(0), iRank(0), iNumType(0), nAttrs(0), iInterlaceMode(0), iPalInterlaceMode(0), iPalDataType(0), nComps(0), nPalEntries(0), iXDim(0), iYDim(0), iBandDim(-1), i4Dim(0), nBandCount(0), pszSubdatasetName(NULL), pszFieldName(NULL), poColorTable(NULL), oSRS( OGRSpatialReference() ), bHasGeoTransform(false), pszProjection(CPLStrdup( "" )), pszGCPProjection(CPLStrdup( "" )), pasGCPList(NULL), nGCPCount(0), iDatasetType(HDF4_UNKNOWN), iSDS(FAIL), nBlockPreferredXSize(-1), nBlockPreferredYSize(-1), bReadTile(false) { memset(aiDimSizes, 0, sizeof(aiDimSizes)); papszLocalMetadata = NULL; memset(aiPaletteData, 0, sizeof(aiPaletteData)); memset(szName, 0, sizeof(szName)); adfGeoTransform[0] = 0.0; adfGeoTransform[1] = 1.0; adfGeoTransform[2] = 0.0; adfGeoTransform[3] = 0.0; adfGeoTransform[4] = 0.0; adfGeoTransform[5] = 1.0; } /************************************************************************/ /* ~HDF4ImageDataset() */ /************************************************************************/ HDF4ImageDataset::~HDF4ImageDataset() { CPLMutexHolderD(&hHDF4Mutex); FlushCache(); CPLFree( pszFilename ); if( iSDS != FAIL ) SDendaccess( iSDS ); if( hSD > 0 ) SDend( hSD ); hSD = 0; if( iGR > 0 ) GRendaccess( iGR ); if( hGR > 0 ) GRend( hGR ); hGR = 0; CPLFree( pszSubdatasetName ); CPLFree( pszFieldName ); if( papszLocalMetadata ) CSLDestroy( papszLocalMetadata ); if( poColorTable != NULL ) delete poColorTable; CPLFree( pszProjection ); CPLFree( pszGCPProjection ); if( nGCPCount > 0 ) { for( int i = 0; i < nGCPCount; i++ ) { CPLFree( pasGCPList[i].pszId ); CPLFree( pasGCPList[i].pszInfo ); } CPLFree( pasGCPList ); } if( hHDF4 > 0 ) { switch ( iDatasetType ) { case HDF4_EOS: switch ( iSubdatasetType ) { case H4ST_EOS_SWATH: case H4ST_EOS_SWATH_GEOL: SWclose( hHDF4 ); break; case H4ST_EOS_GRID: GDclose( hHDF4 ); break; default: break; } break; case HDF4_SDS: case HDF4_GR: hHDF4 = Hclose( hHDF4 ); break; default: break; } } } /************************************************************************/ /* GetGeoTransform() */ /************************************************************************/ CPLErr HDF4ImageDataset::GetGeoTransform( double * padfTransform ) { memcpy( padfTransform, adfGeoTransform, sizeof(double) * 6 ); if( !bHasGeoTransform ) return CE_Failure; return CE_None; } /************************************************************************/ /* SetGeoTransform() */ /************************************************************************/ CPLErr HDF4ImageDataset::SetGeoTransform( double * padfTransform ) { bHasGeoTransform = true; memcpy( adfGeoTransform, padfTransform, sizeof(double) * 6 ); return CE_None; } /************************************************************************/ /* GetProjectionRef() */ /************************************************************************/ const char *HDF4ImageDataset::GetProjectionRef() { return pszProjection; } /************************************************************************/ /* SetProjection() */ /************************************************************************/ CPLErr HDF4ImageDataset::SetProjection( const char *pszNewProjection ) { CPLFree( pszProjection ); pszProjection = CPLStrdup( pszNewProjection ); return CE_None; } /************************************************************************/ /* GetGCPCount() */ /************************************************************************/ int HDF4ImageDataset::GetGCPCount() { return nGCPCount; } /************************************************************************/ /* GetGCPProjection() */ /************************************************************************/ const char *HDF4ImageDataset::GetGCPProjection() { if( nGCPCount > 0 ) return pszGCPProjection; return ""; } /************************************************************************/ /* GetGCPs() */ /************************************************************************/ const GDAL_GCP *HDF4ImageDataset::GetGCPs() { return pasGCPList; } /************************************************************************/ /* FlushCache() */ /************************************************************************/ void HDF4ImageDataset::FlushCache() { CPLMutexHolderD(&hHDF4Mutex); GDALDataset::FlushCache(); if( eAccess == GA_ReadOnly ) return; // Write out transformation matrix. const char *pszValue = CPLSPrintf( "%f, %f, %f, %f, %f, %f", adfGeoTransform[0], adfGeoTransform[1], adfGeoTransform[2], adfGeoTransform[3], adfGeoTransform[4], adfGeoTransform[5] ); if( (SDsetattr( hSD, "TransformationMatrix", DFNT_CHAR8, static_cast<int>(strlen(pszValue)) + 1, pszValue )) < 0 ) { CPLDebug( "HDF4Image", "Cannot write transformation matrix to output file" ); } // Write out projection if( pszProjection != NULL && !EQUAL( pszProjection, "" ) ) { if( (SDsetattr( hSD, "Projection", DFNT_CHAR8, static_cast<int>(strlen(pszProjection)) + 1, pszProjection )) < 0 ) { CPLDebug("HDF4Image", "Cannot write projection information to output file"); } } // Store all metadata from source dataset as HDF attributes if( GetMetadata() ) { char **papszMeta = GetMetadata(); while( *papszMeta ) { char *pszName = NULL; pszValue = CPLParseNameValue( *papszMeta++, &pszName ); if( pszName != NULL && (SDsetattr( hSD, pszName, DFNT_CHAR8, static_cast<int>(strlen(pszValue)) + 1, pszValue )) < 0 ) { CPLDebug( "HDF4Image", "Cannot write metadata information to output file" ); } CPLFree( pszName ); } } // Write out NoData values for ( int iBand = 1; iBand <= nBands; iBand++ ) { HDF4ImageRasterBand *poBand = reinterpret_cast<HDF4ImageRasterBand *>( GetRasterBand(iBand) ); if( poBand->bNoDataSet ) { char *pszName = CPLStrdup( CPLSPrintf( "NoDataValue%d", iBand ) ); pszValue = CPLSPrintf( "%f", poBand->dfNoDataValue ); if( (SDsetattr( hSD, pszName, DFNT_CHAR8, static_cast<int>(strlen(pszValue)) + 1, pszValue )) < 0 ) { CPLDebug( "HDF4Image", "Cannot write NoData value for band %d " "to output file", iBand); } CPLFree( pszName ); } } // Write out band descriptions for ( int iBand = 1; iBand <= nBands; iBand++ ) { HDF4ImageRasterBand *poBand = reinterpret_cast<HDF4ImageRasterBand *>( GetRasterBand(iBand) ); char *pszName = CPLStrdup( CPLSPrintf( "BandDesc%d", iBand ) ); pszValue = poBand->GetDescription(); if( pszValue != NULL && !EQUAL( pszValue, "" ) ) { if( SDsetattr( hSD, pszName, DFNT_CHAR8, static_cast<int>(strlen(pszValue)) + 1, pszValue ) < 0 ) { CPLDebug( "HDF4Image", "Cannot write band's %d description to output file", iBand); } } CPLFree( pszName ); } } /************************************************************************/ /* USGSMnemonicToCode() */ /************************************************************************/ long HDF4ImageDataset::USGSMnemonicToCode( const char* pszMnemonic ) { if( EQUAL(pszMnemonic, "UTM") ) return 1L; else if( EQUAL(pszMnemonic, "LAMCC") ) return 4L; else if( EQUAL(pszMnemonic, "PS") ) return 6L; else if( EQUAL(pszMnemonic, "PC") ) return 7L; else if( EQUAL(pszMnemonic, "TM") ) return 9L; else if( EQUAL(pszMnemonic, "EQRECT") ) return 17L; else if( EQUAL(pszMnemonic, "OM") ) return 20L; else if( EQUAL(pszMnemonic, "SOM") ) return 22L; else return 1L; // UTM by default } /************************************************************************/ /* ToGeoref() */ /************************************************************************/ void HDF4ImageDataset::ToGeoref( double *pdfGeoX, double *pdfGeoY ) { OGRCoordinateTransformation *poTransform = NULL; OGRSpatialReference *poLatLong = NULL; poLatLong = oSRS.CloneGeogCS(); poTransform = OGRCreateCoordinateTransformation( poLatLong, &oSRS ); if( poTransform != NULL ) poTransform->Transform( 1, pdfGeoX, pdfGeoY, NULL ); if( poTransform != NULL ) delete poTransform; if( poLatLong != NULL ) delete poLatLong; } /************************************************************************/ /* ReadCoordinates() */ /************************************************************************/ void HDF4ImageDataset::ReadCoordinates( const char *pszString, double *pdfCenterY, double *pdfCenterX ) { char **papszStrList = CSLTokenizeString2( pszString, ", ", 0 ); *pdfCenterY = CPLAtof( papszStrList[0] ); /* lat */ *pdfCenterX = CPLAtof( papszStrList[1] ); /* lon */ CSLDestroy( papszStrList ); } /************************************************************************/ /* CaptureL1GMTLInfo() */ /************************************************************************/ /* FILE L71002025_02520010722_M_MTL.L1G GROUP = L1_METADATA_FILE ... GROUP = PRODUCT_METADATA PRODUCT_TYPE = "L1G" PROCESSING_SOFTWARE = "IAS_5.1" EPHEMERIS_TYPE = "DEFINITIVE" SPACECRAFT_ID = "Landsat7" SENSOR_ID = "ETM+" ACQUISITION_DATE = 2001-07-22 WRS_PATH = 002 STARTING_ROW = 025 ENDING_ROW = 025 BAND_COMBINATION = "12345--7-" PRODUCT_UL_CORNER_LAT = 51.2704805 PRODUCT_UL_CORNER_LON = -53.8914311 PRODUCT_UR_CORNER_LAT = 50.8458100 PRODUCT_UR_CORNER_LON = -50.9869091 PRODUCT_LL_CORNER_LAT = 49.6960897 PRODUCT_LL_CORNER_LON = -54.4047933 PRODUCT_LR_CORNER_LAT = 49.2841436 PRODUCT_LR_CORNER_LON = -51.5900428 PRODUCT_UL_CORNER_MAPX = 298309.894 PRODUCT_UL_CORNER_MAPY = 5683875.631 PRODUCT_UR_CORNER_MAPX = 500921.624 PRODUCT_UR_CORNER_MAPY = 5632678.683 PRODUCT_LL_CORNER_MAPX = 254477.193 PRODUCT_LL_CORNER_MAPY = 5510407.880 PRODUCT_LR_CORNER_MAPX = 457088.923 PRODUCT_LR_CORNER_MAPY = 5459210.932 PRODUCT_SAMPLES_REF = 6967 PRODUCT_LINES_REF = 5965 BAND1_FILE_NAME = "L71002025_02520010722_B10.L1G" BAND2_FILE_NAME = "L71002025_02520010722_B20.L1G" BAND3_FILE_NAME = "L71002025_02520010722_B30.L1G" BAND4_FILE_NAME = "L71002025_02520010722_B40.L1G" BAND5_FILE_NAME = "L71002025_02520010722_B50.L1G" BAND7_FILE_NAME = "L72002025_02520010722_B70.L1G" METADATA_L1_FILE_NAME = "L71002025_02520010722_MTL.L1G" CPF_FILE_NAME = "L7CPF20010701_20010930_06" HDF_DIR_FILE_NAME = "L71002025_02520010722_HDF.L1G" END_GROUP = PRODUCT_METADATA ... GROUP = PROJECTION_PARAMETERS REFERENCE_DATUM = "NAD83" REFERENCE_ELLIPSOID = "GRS80" GRID_CELL_SIZE_PAN = 15.000000 GRID_CELL_SIZE_THM = 60.000000 GRID_CELL_SIZE_REF = 30.000000 ORIENTATION = "NOM" RESAMPLING_OPTION = "CC" MAP_PROJECTION = "UTM" END_GROUP = PROJECTION_PARAMETERS GROUP = UTM_PARAMETERS ZONE_NUMBER = 22 END_GROUP = UTM_PARAMETERS END_GROUP = L1_METADATA_FILE END */ void HDF4ImageDataset::CaptureL1GMTLInfo() { /* -------------------------------------------------------------------- */ /* Does the physical file look like it matches our expected */ /* name pattern? */ /* -------------------------------------------------------------------- */ if( strlen(pszFilename) < 8 || !EQUAL(pszFilename+strlen(pszFilename)-8,"_HDF.L1G") ) return; /* -------------------------------------------------------------------- */ /* Construct the name of the corresponding MTL file. We should */ /* likely be able to extract that from the HDF itself but I'm */ /* not sure where to find it. */ /* -------------------------------------------------------------------- */ CPLString osMTLFilename = pszFilename; osMTLFilename.resize(osMTLFilename.length() - 8); osMTLFilename += "_MTL.L1G"; /* -------------------------------------------------------------------- */ /* Ingest the MTL using the NASAKeywordHandler written for the */ /* PDS driver. */ /* -------------------------------------------------------------------- */ VSILFILE *fp = VSIFOpenL( osMTLFilename, "r" ); if( fp == NULL ) return; NASAKeywordHandler oMTL; if( !oMTL.Ingest( fp, 0 ) ) { VSIFCloseL( fp ); return; } VSIFCloseL( fp ); /* -------------------------------------------------------------------- */ /* Note: Different variation of MTL files use different group names. */ /* Check for LPGS_METADATA_FILE and L1_METADATA_FILE. */ /* -------------------------------------------------------------------- */ CPLString osPrefix; if( oMTL.GetKeyword( "LPGS_METADATA_FILE.PRODUCT_METADATA" ".PRODUCT_UL_CORNER_LON", NULL ) ) osPrefix = "LPGS_METADATA_FILE.PRODUCT_METADATA.PRODUCT_"; else if( oMTL.GetKeyword( "L1_METADATA_FILE.PRODUCT_METADATA" ".PRODUCT_UL_CORNER_LON", NULL ) ) osPrefix = "L1_METADATA_FILE.PRODUCT_METADATA.PRODUCT_"; else return; const double dfULX = CPLAtof( oMTL.GetKeyword( (osPrefix+"UL_CORNER_LON").c_str(), "0" ) ); const double dfULY = CPLAtof( oMTL.GetKeyword( (osPrefix+"UL_CORNER_LAT").c_str(), "0" ) ); const double dfLRX = CPLAtof( oMTL.GetKeyword( (osPrefix+"LR_CORNER_LON").c_str(), "0" ) ); const double dfLRY = CPLAtof( oMTL.GetKeyword( (osPrefix+"LR_CORNER_LAT").c_str(), "0" ) ); const double dfLLX = CPLAtof( oMTL.GetKeyword( (osPrefix+"LL_CORNER_LON").c_str(), "0" ) ); const double dfLLY = CPLAtof( oMTL.GetKeyword( (osPrefix+"LL_CORNER_LAT").c_str(), "0" ) ); const double dfURX = CPLAtof( oMTL.GetKeyword( (osPrefix+"UR_CORNER_LON").c_str(), "0" ) ); const double dfURY = CPLAtof( oMTL.GetKeyword( (osPrefix+"UR_CORNER_LAT").c_str(), "0" ) ); CPLFree( pszGCPProjection ); pszGCPProjection = CPLStrdup( "GEOGCS[\"WGS 84\",DATUM[\"WGS_1984\",SPHEROID[\"WGS 84\",6378137," "298.257223563,AUTHORITY[\"EPSG\",\"7030\"]],TOWGS84[0,0,0,0,0,0,0]," "AUTHORITY[\"EPSG\",\"6326\"]],PRIMEM[\"Greenwich\",0," "AUTHORITY[\"EPSG\",\"8901\"]],UNIT[\"degree\",0.0174532925199433," "AUTHORITY[\"EPSG\",\"9108\"]],AXIS[\"Lat\",NORTH],AXIS[\"Long\",EAST]" ",AUTHORITY[\"EPSG\",\"4326\"]]" ); nGCPCount = 4; pasGCPList = (GDAL_GCP *) CPLCalloc( nGCPCount, sizeof( GDAL_GCP ) ); GDALInitGCPs( nGCPCount, pasGCPList ); pasGCPList[0].dfGCPX = dfULX; pasGCPList[0].dfGCPY = dfULY; pasGCPList[0].dfGCPPixel = 0.0; pasGCPList[0].dfGCPLine = 0.0; pasGCPList[1].dfGCPX = dfURX; pasGCPList[1].dfGCPY = dfURY; pasGCPList[1].dfGCPPixel = GetRasterXSize(); pasGCPList[1].dfGCPLine = 0.0; pasGCPList[2].dfGCPX = dfLLX; pasGCPList[2].dfGCPY = dfLLY; pasGCPList[2].dfGCPPixel = 0.0; pasGCPList[2].dfGCPLine = GetRasterYSize(); pasGCPList[3].dfGCPX = dfLRX; pasGCPList[3].dfGCPY = dfLRY; pasGCPList[3].dfGCPPixel = GetRasterXSize(); pasGCPList[3].dfGCPLine = GetRasterYSize(); } /************************************************************************/ /* CaptureNRLGeoTransform() */ /* */ /* Capture geotransform and coordinate system from NRL (Naval */ /* Research Laboratory, Stennis Space Center) metadata. */ /************************************************************************/ /* Example metadata: Metadata: createTime=Fri Oct 1 18:00:07 2004 createSoftware=APS v2.8.4 createPlatform=i686-pc-linux-gnu createAgency=Naval Research Laboratory, Stennis Space Center sensor=MODIS sensorPlatform=TERRA-AM sensorAgency=NASA sensorType=whiskbroom sensorSpectrum=Visible/Thermal sensorNumberOfBands=36 sensorBandUnits=nano meters sensorBands=645, 858.5, 469, 555, 1240, 1640, 2130, 412.5, 443, 488, 531, 551, 667, 678, 748, 869.5, 905, 936, 940, 3750, 3959, 3959, 4050, 4465.5, 4515.5, 13 75, 6715, 7325, 8550, 9730, 11130, 12020, 13335, 13635, 13935, 14235 sensorBandWidths=50, 35, 20, 20, 20, 24, 50, 15, 10, 10, 10, 10, 10, 10, 10, 1 5, 30, 10, 50, 90, 60, 60, 60, 65, 67, 30, 360, 300, 300, 300, 500, 500, 300, 30 0, 300, 300 sensorNominalAltitudeInKM=705 sensorScanWidthInKM=2330 sensorResolutionInKM=1 sensorPlatformType=Polar-orbiting Satellite timeStartYear=2004 timeStartDay=275 timeStartTime=56400000 timeStart=Fri Oct 1 15:40:00 2004 timeDayNight=Day timeEndYear=2004 timeEndDay=275 timeEndTime=56700000 timeEnd=Fri Oct 1 15:45:00 2004 inputMasks=HIGLINT,CLDICE,LAND,ATMFAIL inputMasksInt=523 processedVersion=1.2 file=MODAM2004275.L3_Mosaic_NOAA_GMX fileTitle=NRL Level-3 Mosaic fileVersion=3.0 fileClassification=UNCLASSIFIED fileStatus=EXPERIMENTAL navType=mapped mapProjectionSystem=NRL(USGS) mapProjection=Gomex mapUpperLeft=31, -99 mapUpperRight=31, -79 mapLowerLeft=14.9844128048645, -99 mapLowerRight=14.9844128048645, -79 inputFiles=MODAM2004275154000.L3_NOAA_GMX ... */ void HDF4ImageDataset::CaptureNRLGeoTransform() { /* -------------------------------------------------------------------- */ /* Collect the four corners. */ /* -------------------------------------------------------------------- */ double adfXY[8] = {}; static const char * const apszItems[] = { "mapUpperLeft", "mapUpperRight", "mapLowerLeft", "mapLowerRight" }; bool bLLPossible = true; for( int iCorner = 0; iCorner < 4; iCorner++ ) { const char *pszCornerLoc = CSLFetchNameValue( papszGlobalMetadata, apszItems[iCorner] ); if( pszCornerLoc == NULL ) return; char **papszTokens = CSLTokenizeStringComplex( pszCornerLoc, ",", FALSE, FALSE ); if( CSLCount( papszTokens ) != 2 ) { CSLDestroy( papszTokens ); return; } adfXY[iCorner*2+0] = CPLAtof( papszTokens[1] ); adfXY[iCorner*2+1] = CPLAtof( papszTokens[0] ); if( adfXY[iCorner*2+0] < -360 || adfXY[iCorner*2+0] > 360 || adfXY[iCorner*2+1] < -90 || adfXY[iCorner*2+1] > 90 ) bLLPossible = false; CSLDestroy( papszTokens ); } /* -------------------------------------------------------------------- */ /* Does this look like nice clean "northup" lat/long data? */ /* -------------------------------------------------------------------- */ if( adfXY[0*2+0] == adfXY[2*2+0] && adfXY[0*2+1] == adfXY[1*2+1] && bLLPossible ) { bHasGeoTransform = true; adfGeoTransform[0] = adfXY[0*2+0]; adfGeoTransform[1] = (adfXY[1*2+0] - adfXY[0*2+0]) / nRasterXSize; adfGeoTransform[2] = 0.0; adfGeoTransform[3] = adfXY[0*2+1]; adfGeoTransform[4] = 0.0; adfGeoTransform[5] = (adfXY[2*2+1] - adfXY[0*2+1]) / nRasterYSize; oSRS.SetWellKnownGeogCS( "WGS84" ); CPLFree( pszProjection ); oSRS.exportToWkt( &pszProjection ); } /* -------------------------------------------------------------------- */ /* Can we find the USGS Projection Parameters? */ /* -------------------------------------------------------------------- */ bool bGotGCTPProjection = false; int l_iSDSIndex = FAIL; int l_iSDS = FAIL; const char *mapProjection = CSLFetchNameValue( papszGlobalMetadata, "mapProjection" ); if( mapProjection ) l_iSDSIndex = SDnametoindex( hSD, mapProjection ); if( l_iSDSIndex != FAIL ) l_iSDS = SDselect( hSD, l_iSDSIndex ); if( l_iSDS != FAIL ) { char l_szName[HDF4_SDS_MAXNAMELEN] = {}; int32 l_iRank = 0; int32 l_iNumType = 0; int32 l_nAttrs = 0; int32 l_aiDimSizes[H4_MAX_VAR_DIMS] = {}; double adfGCTP[29] = {}; int32 aiStart[H4_MAX_NC_DIMS] = {}; int32 aiEdges[H4_MAX_NC_DIMS] = {}; aiStart[0] = 0; aiEdges[0] = 29; if( SDgetinfo( l_iSDS, l_szName, &l_iRank, l_aiDimSizes, &l_iNumType, &l_nAttrs) == 0 && l_iNumType == DFNT_FLOAT64 && l_iRank == 1 && l_aiDimSizes[0] >= 29 && SDreaddata( l_iSDS, aiStart, NULL, aiEdges, adfGCTP ) == 0 && oSRS.importFromUSGS( static_cast<long>( adfGCTP[1] ), static_cast<long>( adfGCTP[2] ), adfGCTP+4, static_cast<long>( adfGCTP[3] ) ) == OGRERR_NONE ) { CPLDebug( "HDF4Image", "GCTP Parms = %g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g," "%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g,%g", adfGCTP[0], adfGCTP[1], adfGCTP[2], adfGCTP[3], adfGCTP[4], adfGCTP[5], adfGCTP[6], adfGCTP[7], adfGCTP[8], adfGCTP[9], adfGCTP[10], adfGCTP[11], adfGCTP[12], adfGCTP[13], adfGCTP[14], adfGCTP[15], adfGCTP[16], adfGCTP[17], adfGCTP[18], adfGCTP[19], adfGCTP[20], adfGCTP[21], adfGCTP[22], adfGCTP[23], adfGCTP[24], adfGCTP[25], adfGCTP[26], adfGCTP[27], adfGCTP[28] ); CPLFree( pszProjection ); oSRS.exportToWkt( &pszProjection ); bGotGCTPProjection = true; } SDendaccess(l_iSDS); } /* -------------------------------------------------------------------- */ /* If we derived a GCTP based projection, then we need to */ /* transform the lat/long corners into this projection and use */ /* them to establish the geotransform. */ /* -------------------------------------------------------------------- */ if( bLLPossible && bGotGCTPProjection ) { OGRSpatialReference oWGS84; oWGS84.SetWellKnownGeogCS( "WGS84" ); OGRCoordinateTransformation *poCT = OGRCreateCoordinateTransformation( &oWGS84, &oSRS ); double dfULX = adfXY[0*2+0]; double dfULY = adfXY[0*2+1]; double dfLRX = adfXY[3*2+0]; double dfLRY = adfXY[3*2+1]; if( poCT->Transform( 1, &dfULX, &dfULY ) && poCT->Transform( 1, &dfLRX, &dfLRY ) ) { bHasGeoTransform = true; adfGeoTransform[0] = dfULX; adfGeoTransform[1] = (dfLRX - dfULX) / nRasterXSize; adfGeoTransform[2] = 0.0; adfGeoTransform[3] = dfULY; adfGeoTransform[4] = 0.0; adfGeoTransform[5] = (dfLRY - dfULY) / nRasterYSize; } delete poCT; } } /************************************************************************/ /* CaptureCoastwatchGCTPInfo() */ /************************************************************************/ /* Example Metadata from: http://coastwatch.noaa.gov/interface/most_recent.php?sensor=MODIS&product=chlorNASA Definitions at: http://coastwatch.noaa.gov/cw_form_hdf.html Metadata: satellite=Aqua sensor=MODIS origin=USDOC/NOAA/NESDIS CoastWatch history=PGE01:4.1.12;PGE02:4.3.1.12;SeaDAS Version ?.?, MSl12 4.0.2, Linux 2.4.21-27.0.1.EL cwregister GulfOfMexicoSinusoidal.hdf MODSCW.P2005023.1835.swath09.hdf MODSCW.P2005023.1835.GM16.mapped09.hdf cwgraphics MODSCW.P2005023.1835.GM16.closest.hdf cwmath --template chlor_a --expr chlor_a=select(and(l2_flags,514)!=0,nan,chlor_a) /data/aps/browse/lvl3/seadas/coastwatch/hdf/MODSCW_P2005023_1835_GM16_closest.hdf /data/aps/browse/lvl3/seadas/coastwatch/maskhdf/MODSCW_P2005023_1835_GM16_closest_chlora.hdf cwmath --template latitude --expr latitude=latitude /data/aps/browse/lvl3/seadas/coastwatch/hdf/MODSCW_P2005023_1835_GM16_closest.hdf /data/aps/browse/lvl3/seadas/coastwatch/maskhdf/MODSCW_P2005023_1835_GM16_closest_chlora.hdf cwmath --template longitude --expr longitude=longitude /data/aps/browse/lvl3/seadas/coastwatch/hdf/MODSCW_P2005023_1835_GM16_closest.hdf /data/aps/browse/lvl3/seadas/coastwatch/maskhdf/MODSCW_P2005023_1835_GM16_closest_chlora.hdf cwhdf_version=3.2 pass_type=day pass_date=12806 start_time=66906 temporal_extent=298 projection_type=mapped projection=Sinusoidal gctp_sys=16 gctp_zone=62 gctp_parm=6378137, 0, 0, 0, -89000000, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 gctp_datum=12 et_affine=0, -1008.74836097881, 1008.74836097881, 0, -953126.102425113, 3447041.10282512 rows=1540 cols=2000 polygon_latitude=31, 31, 31, 31, 31, 27.5095879249529, 24.0191758499058, 20.5287637748587, 17.0383516998116, 17.0383516998116, 17.0383516998116, 17.0383516998116, 17.0383516998116, 20.5287637748587, 24.0191758499058, 27.5095879249529, 31 polygon_longitude=-99, -93.7108573344442, -88.4217146688883, -83.1325720033325, -77.8434293377767, -78.217853417453, -78.5303805448579, -78.7884829057512, -78.9979508907244, -83.7397542896832, -88.481557688642, -93.2233610876007, -97.9651644865595, -98.1529175079091, -98.3842631146439, -98.664391423662, -99 orbit_type=ascending raster_type=RasterPixelIsArea swath_sync_lines=1 */ void HDF4ImageDataset::CaptureCoastwatchGCTPInfo() { if( CSLFetchNameValue( papszGlobalMetadata, "gctp_sys" ) == NULL || CSLFetchNameValue( papszGlobalMetadata, "gctp_zone" ) == NULL || CSLFetchNameValue( papszGlobalMetadata, "gctp_parm" ) == NULL || CSLFetchNameValue( papszGlobalMetadata, "gctp_datum" ) == NULL || CSLFetchNameValue( papszGlobalMetadata, "et_affine" ) == NULL ) return; /* -------------------------------------------------------------------- */ /* Grab USGS/GCTP Parameters. */ /* -------------------------------------------------------------------- */ const int nSys = atoi( CSLFetchNameValue( papszGlobalMetadata, "gctp_sys" ) ); const int nZone = atoi( CSLFetchNameValue( papszGlobalMetadata, "gctp_zone" ) ); const int nDatum = atoi( CSLFetchNameValue( papszGlobalMetadata, "gctp_datum" ) ); char **papszTokens = CSLTokenizeStringComplex( CSLFetchNameValue( papszGlobalMetadata, "gctp_parm" ), ",", FALSE, FALSE ); if( CSLCount(papszTokens) < 15 ) { CSLDestroy(papszTokens); return; } double adfParms[15]; for( int iParm = 0; iParm < 15; iParm++ ) adfParms[iParm] = CPLAtof( papszTokens[iParm] ); CSLDestroy( papszTokens ); /* -------------------------------------------------------------------- */ /* Convert into an SRS. */ /* -------------------------------------------------------------------- */ if( oSRS.importFromUSGS( nSys, nZone, adfParms, nDatum ) != OGRERR_NONE ) return; CPLFree( pszProjection ); oSRS.exportToWkt( &pszProjection ); /* -------------------------------------------------------------------- */ /* Capture the affine transform info. */ /* -------------------------------------------------------------------- */ papszTokens = CSLTokenizeStringComplex( CSLFetchNameValue( papszGlobalMetadata, "et_affine" ), ",", FALSE, FALSE ); if( CSLCount(papszTokens) != 6 ) { CSLDestroy(papszTokens); return; } // We don't seem to have proper ef_affine docs so I don't // know which of these two coefficients goes where. if( CPLAtof(papszTokens[0]) != 0.0 || CPLAtof(papszTokens[3]) != 0.0 ) { CSLDestroy(papszTokens); return; } bHasGeoTransform = true; adfGeoTransform[0] = CPLAtof( papszTokens[4] ); adfGeoTransform[1] = CPLAtof( papszTokens[2] ); adfGeoTransform[2] = 0.0; adfGeoTransform[3] = CPLAtof( papszTokens[5] ); adfGeoTransform[4] = 0.0; adfGeoTransform[5] = CPLAtof( papszTokens[1] ); // Middle of pixel adjustment. adfGeoTransform[0] -= adfGeoTransform[1] * 0.5; adfGeoTransform[3] -= adfGeoTransform[5] * 0.5; CSLDestroy(papszTokens); } /************************************************************************/ /* GetImageDimensions() */ /************************************************************************/ void HDF4ImageDataset::GetImageDimensions( char *pszDimList ) { char **papszDimList = CSLTokenizeString2( pszDimList, ",", CSLT_HONOURSTRINGS ); const int nDimCount = CSLCount( papszDimList ); // TODO: check whether nDimCount is > 1 and do something if it isn't. // Search for the "Band" word in the name of dimension // or take the first one as a number of bands if( iRank == 2 ) { nBandCount = 1; } else { for( int i = 0; i < nDimCount; i++ ) { if( strstr( papszDimList[i], "band" ) ) { iBandDim = i; nBandCount = aiDimSizes[i]; // Handle 4D datasets if( iRank > 3 && i < nDimCount - 1 ) { // FIXME: is there a better way to search for // the 4th dimension? i4Dim = i + 1; nBandCount *= aiDimSizes[i4Dim]; } break; } } } // Search for the starting "X" and "Y" in the names or take // the last two dimensions as X and Y sizes. iXDim = nDimCount - 1; iYDim = nDimCount - 2; for( int i = 0; i < nDimCount; i++ ) { if( STARTS_WITH_CI(papszDimList[i], "X") && iBandDim != i ) iXDim = i; else if( STARTS_WITH_CI(papszDimList[i], "Y") && iBandDim != i ) iYDim = i; } // If didn't get a band dimension yet, but have an extra // dimension, use it as the band dimension. if( iRank > 2 && iBandDim == -1 ) { if( iXDim != 0 && iYDim != 0 ) iBandDim = 0; else if( iXDim != 1 && iYDim != 1 ) iBandDim = 1; else if( iXDim != 2 && iYDim != 2 ) iBandDim = 2; nBandCount = aiDimSizes[iBandDim]; } CSLDestroy( papszDimList ); } /************************************************************************/ /* GetSwatAttrs() */ /************************************************************************/ void HDF4ImageDataset::GetSwatAttrs( int32 hSW ) { /* -------------------------------------------------------------------- */ /* At the start we will fetch the global HDF attributes. */ /* -------------------------------------------------------------------- */ int32 hDummy = 0; EHidinfo( hHDF4, &hDummy, &hSD ); ReadGlobalAttributes( hSD ); papszLocalMetadata = CSLDuplicate( papszGlobalMetadata ); /* -------------------------------------------------------------------- */ /* Fetch the esoteric HDF-EOS attributes then. */ /* -------------------------------------------------------------------- */ int32 nStrBufSize = 0; if( SWinqattrs( hSW, NULL, &nStrBufSize ) > 0 && nStrBufSize > 0 ) { char *pszAttrList = reinterpret_cast<char *>( CPLMalloc( nStrBufSize + 1 ) ); SWinqattrs( hSW, pszAttrList, &nStrBufSize ); #ifdef DEBUG CPLDebug( "HDF4Image", "List of attributes in swath \"%s\": %s", pszFieldName, pszAttrList ); #endif char **papszAttributes = CSLTokenizeString2( pszAttrList, ",", CSLT_HONOURSTRINGS ); const int l_nAttrs = CSLCount( papszAttributes ); for( int i = 0; i < l_nAttrs; i++ ) { int32 l_iNumType = 0; int32 nValues = 0; if( SWattrinfo( hSW, papszAttributes[i], &l_iNumType, &nValues ) < 0 ) continue; void *pData = NULL; if( l_iNumType == DFNT_CHAR8 || l_iNumType == DFNT_UCHAR8 ) pData = CPLMalloc( (nValues + 1) * GetDataTypeSize(l_iNumType) ); else pData = CPLMalloc( nValues * GetDataTypeSize(l_iNumType) ); SWreadattr( hSW, papszAttributes[i], pData ); if( l_iNumType == DFNT_CHAR8 || l_iNumType == DFNT_UCHAR8 ) { reinterpret_cast<char *>( pData )[nValues] = '\0'; papszLocalMetadata = CSLAddNameValue( papszLocalMetadata, papszAttributes[i], const_cast<const char *>( reinterpret_cast<char *>( pData ) ) ); } else { char *pszTemp = SPrintArray( GetDataType(l_iNumType), pData, nValues, ", " ); papszLocalMetadata = CSLAddNameValue( papszLocalMetadata, papszAttributes[i], pszTemp ); CPLFree( pszTemp ); } CPLFree( pData ); } CSLDestroy( papszAttributes ); CPLFree( pszAttrList ); } /* -------------------------------------------------------------------- */ /* After fetching HDF-EOS specific stuff we will read the generic */ /* HDF attributes and append them to the list of metadata. */ /* -------------------------------------------------------------------- */ int32 l_iSDS = 0; if( SWsdid(hSW, pszFieldName, &l_iSDS) != -1 ) { int32 l_iRank = 0; int32 l_iNumType = 0; int32 l_nAttrs = 0; char l_szName[HDF4_SDS_MAXNAMELEN] = {}; int32 l_aiDimSizes[H4_MAX_VAR_DIMS] = {}; if( SDgetinfo( l_iSDS, l_szName, &l_iRank, l_aiDimSizes, &l_iNumType, &l_nAttrs) == 0 ) { for( int32 iAttribute = 0; iAttribute < l_nAttrs; iAttribute++ ) { char szAttrName[H4_MAX_NC_NAME] = {}; int32 nValues = 0; SDattrinfo( l_iSDS, iAttribute, szAttrName, &l_iNumType, &nValues ); papszLocalMetadata = TranslateHDF4Attributes( l_iSDS, iAttribute, szAttrName, l_iNumType, nValues, papszLocalMetadata ); } } } /* -------------------------------------------------------------------- */ /* Finally make the whole list visible. */ /* -------------------------------------------------------------------- */ SetMetadata( papszLocalMetadata ); } /************************************************************************/ /* GetGridAttrs() */ /************************************************************************/ void HDF4ImageDataset::GetGridAttrs( int32 hGD ) { /* -------------------------------------------------------------------- */ /* At the start we will fetch the global HDF attributes. */ /* -------------------------------------------------------------------- */ int32 hDummy = 0; EHidinfo( hHDF4, &hDummy, &hSD ); ReadGlobalAttributes( hSD ); papszLocalMetadata = CSLDuplicate( papszGlobalMetadata ); /* -------------------------------------------------------------------- */ /* Fetch the esoteric HDF-EOS attributes then. */ /* -------------------------------------------------------------------- */ int32 nStrBufSize = 0; if( GDinqattrs( hGD, NULL, &nStrBufSize ) > 0 && nStrBufSize > 0 ) { char *pszAttrList = reinterpret_cast<char *>( CPLMalloc( nStrBufSize + 1 ) ); GDinqattrs( hGD, pszAttrList, &nStrBufSize ); #ifdef DEBUG CPLDebug( "HDF4Image", "List of attributes in grid %s: %s", pszFieldName, pszAttrList ); #endif char **papszAttributes = CSLTokenizeString2( pszAttrList, ",", CSLT_HONOURSTRINGS ); const int l_nAttrs = CSLCount( papszAttributes ); for ( int i = 0; i < l_nAttrs; i++ ) { int32 l_iNumType = 0; int32 nValues = 0; GDattrinfo( hGD, papszAttributes[i], &l_iNumType, &nValues ); void *pData = NULL; if( l_iNumType == DFNT_CHAR8 || l_iNumType == DFNT_UCHAR8 ) pData = CPLMalloc( (nValues + 1) * GetDataTypeSize(l_iNumType) ); else pData = CPLMalloc( nValues * GetDataTypeSize(l_iNumType) ); GDreadattr( hGD, papszAttributes[i], pData ); if( l_iNumType == DFNT_CHAR8 || l_iNumType == DFNT_UCHAR8 ) { reinterpret_cast<char *>( pData )[nValues] = '\0'; papszLocalMetadata = CSLAddNameValue( papszLocalMetadata, papszAttributes[i], (const char *) pData ); } else { char *pszTemp = SPrintArray( GetDataType(l_iNumType), pData, nValues, ", " ); papszLocalMetadata = CSLAddNameValue( papszLocalMetadata, papszAttributes[i], pszTemp ); CPLFree( pszTemp ); } CPLFree( pData ); } CSLDestroy( papszAttributes ); CPLFree( pszAttrList ); } /* -------------------------------------------------------------------- */ /* After fetching HDF-EOS specific stuff we will read the generic */ /* HDF attributes and append them to the list of metadata. */ /* -------------------------------------------------------------------- */ int32 l_iSDS = 0; if( GDsdid(hGD, pszFieldName, &l_iSDS) != -1 ) { int32 l_iRank = 0; int32 l_iNumType = 0; int32 l_nAttrs = 0; int32 nValues = 0; char l_szName[HDF4_SDS_MAXNAMELEN] = {}; int32 l_aiDimSizes[H4_MAX_VAR_DIMS] = {}; if( SDgetinfo( l_iSDS, l_szName, &l_iRank, l_aiDimSizes, &l_iNumType, &l_nAttrs) == 0 ) { for( int32 iAttribute = 0; iAttribute < l_nAttrs; iAttribute++ ) { char szAttrName[H4_MAX_NC_NAME] = {}; SDattrinfo( l_iSDS, iAttribute, szAttrName, &l_iNumType, &nValues ); papszLocalMetadata = TranslateHDF4Attributes( l_iSDS, iAttribute, szAttrName, l_iNumType, nValues, papszLocalMetadata ); } } } /* -------------------------------------------------------------------- */ /* Finally make the whole list visible. */ /* -------------------------------------------------------------------- */ SetMetadata( papszLocalMetadata ); } /************************************************************************/ /* ProcessModisSDSGeolocation() */ /* */ /* Recognise latitude and longitude geolocation arrays in */ /* simple SDS datasets like: */ /* */ /* download.osgeo.org/gdal/data/hdf4/A2006005182000.L2_LAC_SST.x.hdf */ /* */ /* As reported in ticket #1895. */ /************************************************************************/ void HDF4ImageDataset::ProcessModisSDSGeolocation(void) { // No point in assigning geolocation to the geolocation SDSes themselves. if( EQUAL(szName,"longitude") || EQUAL(szName,"latitude") ) return; if( nRasterYSize == 1 ) return; /* -------------------------------------------------------------------- */ /* Scan for latitude and longitude sections. */ /* -------------------------------------------------------------------- */ int32 nDatasets = 0; int32 nAttributes = 0; if( SDfileinfo( hSD, &nDatasets, &nAttributes ) != 0 ) return; int nLongitudeWidth = 0; int nLongitudeHeight = 0; int nLatitudeWidth = 0; int nLatitudeHeight = 0; int iXIndex=-1; int iYIndex=-1; for( int iDSIndex = 0; iDSIndex < nDatasets; iDSIndex++ ) { int32 l_iRank = 0; int32 l_iNumType = 0; int32 l_nAttrs = 0; char l_szName[HDF4_SDS_MAXNAMELEN] = {}; int32 l_aiDimSizes[H4_MAX_VAR_DIMS] = {}; const int32 l_iSDS = SDselect( hSD, iDSIndex ); if( SDgetinfo( l_iSDS, l_szName, &l_iRank, l_aiDimSizes, &l_iNumType, &l_nAttrs) == 0 ) { if( EQUAL(l_szName,"latitude") ) { iYIndex = iDSIndex; if( l_iRank == 2 ) { nLatitudeWidth = l_aiDimSizes[1]; nLatitudeHeight = l_aiDimSizes[0]; } } if( EQUAL(l_szName,"longitude") ) { iXIndex = iDSIndex; if( l_iRank == 2 ) { nLongitudeWidth = l_aiDimSizes[1]; nLongitudeHeight = l_aiDimSizes[0]; } } } SDendaccess(l_iSDS); } if( iXIndex == -1 || iYIndex == -1 ) return; int nPixelOffset = 0; int nLineOffset = 0; int nPixelStep = 1; int nLineStep = 1; if( nLongitudeWidth != nLatitudeWidth || nLongitudeHeight != nLatitudeHeight ) { CPLDebug("HDF4", "Longitude and latitude subdatasets don't have same " "dimensions..."); } else if( nLongitudeWidth > 0 && nLongitudeHeight > 0 ) { nPixelStep = static_cast<int>( 0.5 + 1.0 * nRasterXSize / nLongitudeWidth ); nLineStep = static_cast<int>( 0.5 + 1.0 * nRasterYSize / nLongitudeHeight ); nPixelOffset = (nPixelStep-1) / 2; nLineOffset = (nLineStep-1) / 2; } /* -------------------------------------------------------------------- */ /* We found geolocation information. Record it as metadata. */ /* -------------------------------------------------------------------- */ SetMetadataItem( "SRS", SRS_WKT_WGS84, "GEOLOCATION" ); CPLString osWrk; osWrk.Printf( "HDF4_SDS:UNKNOWN:\"%s\":%d", pszFilename, iXIndex ); SetMetadataItem( "X_DATASET", osWrk, "GEOLOCATION" ); SetMetadataItem( "X_BAND", "1" , "GEOLOCATION" ); osWrk.Printf( "HDF4_SDS:UNKNOWN:\"%s\":%d", pszFilename, iYIndex ); SetMetadataItem( "Y_DATASET", osWrk, "GEOLOCATION" ); SetMetadataItem( "Y_BAND", "1" , "GEOLOCATION" ); SetMetadataItem( "PIXEL_OFFSET", CPLSPrintf("%d", nPixelOffset), "GEOLOCATION" ); SetMetadataItem( "PIXEL_STEP", CPLSPrintf("%d", nPixelStep), "GEOLOCATION" ); SetMetadataItem( "LINE_OFFSET", CPLSPrintf("%d", nLineOffset), "GEOLOCATION" ); SetMetadataItem( "LINE_STEP", CPLSPrintf("%d", nLineStep), "GEOLOCATION" ); } /************************************************************************/ /* ProcessSwathGeolocation() */ /* */ /* Handle the swath geolocation data for a swath. Attach */ /* geolocation metadata corresponding to it (if there is no */ /* lattice), and also attach it as GCPs. This is only invoked */ /* for EOS_SWATH, not EOS_SWATH_GEOL datasets. */ /************************************************************************/ int HDF4ImageDataset::ProcessSwathGeolocation( int32 hSW, char **papszDimList ) { /* -------------------------------------------------------------------- */ /* Determine a product name. */ /* -------------------------------------------------------------------- */ const char *pszProduct = CSLFetchNameValue( papszLocalMetadata, "SHORTNAME" ); HDF4EOSProduct eProduct = PROD_UNKNOWN; if( pszProduct ) { if( STARTS_WITH_CI(pszProduct, "ASTL1A") ) eProduct = PROD_ASTER_L1A; else if( STARTS_WITH_CI(pszProduct, "ASTL1B") ) eProduct = PROD_ASTER_L1B; else if( STARTS_WITH_CI(pszProduct, "AST_04") || STARTS_WITH_CI(pszProduct, "AST_05") || STARTS_WITH_CI(pszProduct, "AST_06") || STARTS_WITH_CI(pszProduct, "AST_07") || STARTS_WITH_CI(pszProduct, "AST_08") || STARTS_WITH_CI(pszProduct, "AST_09") || STARTS_WITH_CI(pszProduct, "AST13") || STARTS_WITH_CI(pszProduct, "AST3") ) eProduct = PROD_ASTER_L2; else if( STARTS_WITH_CI(pszProduct, "AST14") ) eProduct = PROD_ASTER_L3; else if( STARTS_WITH_CI(pszProduct, "MOD02") || STARTS_WITH_CI(pszProduct, "MYD02") ) eProduct = PROD_MODIS_L1B; else if( STARTS_WITH_CI(pszProduct, "MOD07_L2") ) eProduct = PROD_MODIS_L2; } /* -------------------------------------------------------------------- */ /* Read names of geolocation fields and corresponding */ /* geolocation maps. */ /* -------------------------------------------------------------------- */ int32 nStrBufSize = 0; const int32 nDataFields = SWnentries( hSW, HDFE_NENTGFLD, &nStrBufSize ); if( nDataFields < 0 || nDataFields > 1024 * 1024 ) return FALSE; char *pszGeoList = reinterpret_cast<char *>( CPLMalloc( nStrBufSize + 1 ) ); int32 *paiRank = reinterpret_cast<int32 *>( CPLMalloc( nDataFields * sizeof(int32) ) ); int32 *paiNumType = reinterpret_cast<int32 *>( CPLMalloc( nDataFields * sizeof(int32) ) ); if( nDataFields != SWinqgeofields(hSW, pszGeoList, paiRank, paiNumType) ) { CPLDebug( "HDF4Image", "Can't get the list of geolocation fields in swath \"%s\"", pszSubdatasetName ); } #ifdef DEBUG else { CPLDebug( "HDF4Image", "Number of geolocation fields in swath \"%s\": %ld", pszSubdatasetName, static_cast<long>( nDataFields ) ); CPLDebug( "HDF4Image", "List of geolocation fields in swath \"%s\": %s", pszSubdatasetName, pszGeoList ); char *pszTmp = SPrintArray( GDT_UInt32, paiRank, nDataFields, "," ); CPLDebug( "HDF4Image", "Geolocation fields ranks: %s", pszTmp ); CPLFree( pszTmp ); } #endif CPLFree( paiRank ); CPLFree( paiNumType ); /* -------------------------------------------------------------------- */ /* Read geolocation data. */ /* -------------------------------------------------------------------- */ char szXGeo[N_BUF_SIZE] = ""; char szYGeo[N_BUF_SIZE] = ""; char szPixel[N_BUF_SIZE]= ""; char szLine[N_BUF_SIZE] = ""; int32 *paiOffset = NULL; int32 *paiIncrement = NULL; int32 nDimMaps = SWnentries( hSW, HDFE_NENTMAP, &nStrBufSize ); if( nDimMaps <= 0 ) { #ifdef DEBUG CPLDebug( "HDF4Image", "No geolocation maps in swath \"%s\"", pszSubdatasetName ); CPLDebug( "HDF4Image", "Suppose one-to-one mapping. X field is \"%s\", " "Y field is \"%s\"", papszDimList[iXDim], papszDimList[iYDim] ); #endif snprintf( szPixel, sizeof(szPixel), "%s", papszDimList[iXDim] ); snprintf( szLine, sizeof(szLine), "%s", papszDimList[iYDim]); snprintf( szXGeo, sizeof(szXGeo), "%s", papszDimList[iXDim]); snprintf( szYGeo, sizeof(szYGeo), "%s", papszDimList[iYDim]); paiOffset = reinterpret_cast<int32 *>( CPLCalloc( 2, sizeof(int32) ) ); paiIncrement = reinterpret_cast<int32 *>( CPLCalloc( 2, sizeof(int32) ) ); paiOffset[0] = 0; paiOffset[1] = 0; paiIncrement[0] = 1; paiIncrement[1] = 1; } else { char *pszDimMaps = reinterpret_cast<char *>( CPLMalloc( nStrBufSize + 1 ) ); paiOffset = reinterpret_cast<int32 *>( CPLCalloc( nDimMaps, sizeof(int32) ) ); paiIncrement = reinterpret_cast<int32 *>( CPLCalloc( nDimMaps, sizeof(int32) ) ); *pszDimMaps = '\0'; if( nDimMaps != SWinqmaps(hSW, pszDimMaps, paiOffset, paiIncrement) ) { CPLDebug( "HDF4Image", "Can't get the list of geolocation maps in swath \"%s\"", pszSubdatasetName ); } #ifdef DEBUG else { CPLDebug( "HDF4Image", "List of geolocation maps in swath \"%s\": %s", pszSubdatasetName, pszDimMaps ); char *pszTmp = SPrintArray( GDT_Int32, paiOffset, nDimMaps, "," ); CPLDebug( "HDF4Image", "Geolocation map offsets: %s", pszTmp ); CPLFree( pszTmp ); pszTmp = SPrintArray( GDT_Int32, paiIncrement, nDimMaps, "," ); CPLDebug( "HDF4Image", "Geolocation map increments: %s", pszTmp ); CPLFree( pszTmp ); } #endif char **papszDimMap = CSLTokenizeString2( pszDimMaps, ",", CSLT_HONOURSTRINGS ); const int nDimMapCount = CSLCount(papszDimMap); for( int i = 0; i < nDimMapCount; i++ ) { if( strstr(papszDimMap[i], papszDimList[iXDim]) ) { snprintf( szPixel, sizeof(szPixel), "%s", papszDimList[iXDim] ); snprintf( szXGeo, sizeof(szXGeo), "%s", papszDimMap[i] ); char *pszTemp = strchr( szXGeo, '/' ); if( pszTemp ) *pszTemp = '\0'; } else if( strstr(papszDimMap[i], papszDimList[iYDim]) ) { snprintf( szLine, sizeof(szLine), "%s", papszDimList[iYDim] ); snprintf( szYGeo, sizeof(szYGeo), "%s", papszDimMap[i] ); char *pszTemp = strchr( szYGeo, '/' ); if( pszTemp ) *pszTemp = '\0'; } } CSLDestroy( papszDimMap ); CPLFree( pszDimMaps ); } if( *szXGeo == 0 || *szYGeo == 0 ) { CPLFree( paiOffset ); CPLFree( paiIncrement ); CPLFree( pszGeoList ); return FALSE; } /* -------------------------------------------------------------------- */ /* Read geolocation fields. */ /* -------------------------------------------------------------------- */ char szGeoDimList[N_BUF_SIZE] = ""; char **papszGeolocations = CSLTokenizeString2( pszGeoList, ",", CSLT_HONOURSTRINGS ); const int nGeolocationsCount = CSLCount( papszGeolocations ); int32 l_aiDimSizes[H4_MAX_VAR_DIMS] = {}; int32 iWrkNumType = 0; void *pLat = NULL; void *pLong = NULL; int32 l_iRank = 0; int32 nLatCount = 0; int32 nLongCount = 0; int32 nXPoints = 0; int32 nYPoints = 0; int iDataSize = 0; int iPixelDim = -1; int iLineDim = -1; int iLongDim = -1; int iLatDim = -1; for( int i = 0; i < nGeolocationsCount; i++ ) { // Skip "SceneLineNumber" table if present in the list of geolocation // fields. It is not needed to fetch geocoding data. if( EQUAL(papszGeolocations[i], "SceneLineNumber") ) continue; if( SWfieldinfo( hSW, papszGeolocations[i], &l_iRank, l_aiDimSizes, &iWrkNumType, szGeoDimList ) < 0 ) { CPLDebug( "HDF4Image", "Can't read attributes of geolocation field \"%s\"", papszGeolocations[i] ); CSLDestroy(papszGeolocations); CPLFree( paiOffset ); CPLFree( paiIncrement ); CPLFree( pszGeoList ); return FALSE; } CPLDebug( "HDF4Image", "List of dimensions in geolocation field \"%s\": %s", papszGeolocations[i], szGeoDimList ); char **papszGeoDimList = CSLTokenizeString2( szGeoDimList, ",", CSLT_HONOURSTRINGS ); const int iXGeo = CSLFindString( papszGeoDimList, szXGeo ); const int iYGeo = CSLFindString( papszGeoDimList, szYGeo ); if( CSLCount(papszGeoDimList) > H4_MAX_VAR_DIMS || iXGeo < 0 || iYGeo < 0 ) { CSLDestroy( papszGeoDimList ); CSLDestroy(papszGeolocations); CPLFree( paiOffset ); CPLFree( paiIncrement ); CPLFree( pszGeoList ); return FALSE; } nXPoints = l_aiDimSizes[iXGeo]; nYPoints = l_aiDimSizes[iYGeo]; if( EQUAL(szPixel, papszDimList[iXDim]) ) { iPixelDim = 1; iLineDim = 0; } else { iPixelDim = 0; iLineDim = 1; } iDataSize = GetDataTypeSize( iWrkNumType ); if( strstr( papszGeolocations[i], "Latitude" ) ) { iLatDim = i; nLatCount = nXPoints * nYPoints; pLat = CPLMalloc( nLatCount * iDataSize ); if( SWreadfield( hSW, papszGeolocations[i], NULL, NULL, NULL, (VOIDP)pLat ) < 0 ) { CPLDebug( "HDF4Image", "Can't read geolocation field %s", papszGeolocations[i]); CPLFree( pLat ); pLat = NULL; } } else if( strstr( papszGeolocations[i], "Longitude" ) ) { iLongDim = i; nLongCount = nXPoints * nYPoints; pLong = CPLMalloc( nLongCount * iDataSize ); if( SWreadfield( hSW, papszGeolocations[i], NULL, NULL, NULL, (VOIDP)pLong ) < 0 ) { CPLDebug( "HDF4Image", "Can't read geolocation field %s", papszGeolocations[i]); CPLFree( pLong ); pLong = NULL; } } CSLDestroy( papszGeoDimList ); } /* -------------------------------------------------------------------- */ /* Do we have a lattice table? */ /* -------------------------------------------------------------------- */ void *pLatticeX = NULL; void *pLatticeY = NULL; int32 iLatticeType = 0; int32 iLatticeDataSize = 0; char pszLatticePoint[] = "LatticePoint"; if( SWfieldinfo(hSW, pszLatticePoint, &l_iRank, l_aiDimSizes, &iLatticeType, szGeoDimList) == 0 && l_iRank == 3 && nXPoints == l_aiDimSizes[1] && nYPoints == l_aiDimSizes[0] && l_aiDimSizes[2] == 2 ) { iLatticeDataSize = GetDataTypeSize( iLatticeType ); int32 iStart[H4_MAX_NC_DIMS] = {}; int32 iEdges[H4_MAX_NC_DIMS] = {}; iStart[1] = 0; iEdges[1] = nXPoints; iStart[0] = 0; iEdges[0] = nYPoints; iStart[2] = 0; iEdges[2] = 1; pLatticeX = CPLMalloc( nLatCount * iLatticeDataSize ); if( SWreadfield( hSW, pszLatticePoint, iStart, NULL, iEdges, (VOIDP)pLatticeX ) < 0 ) { CPLDebug( "HDF4Image", "Can't read lattice field" ); CPLFree( pLatticeX ); pLatticeX = NULL; } iStart[2] = 1; iEdges[2] = 1; pLatticeY = CPLMalloc( nLatCount * iLatticeDataSize ); if( SWreadfield( hSW, pszLatticePoint, iStart, NULL, iEdges, (VOIDP)pLatticeY ) < 0 ) { CPLDebug( "HDF4Image", "Can't read lattice field" ); CPLFree( pLatticeY ); pLatticeY = NULL; } } /* -------------------------------------------------------------------- */ /* Determine whether to use no, partial or full GCPs. */ /* -------------------------------------------------------------------- */ const char *pszGEOL_AS_GCPS = CPLGetConfigOption( "GEOL_AS_GCPS", "PARTIAL" ); int iGCPStepX = 0; int iGCPStepY = 0; if( EQUAL(pszGEOL_AS_GCPS,"NONE") ) { // Leave as is: iGCPStepX = iGCPStepY = 0; } else if( EQUAL(pszGEOL_AS_GCPS,"FULL") ) { iGCPStepX = 1; iGCPStepY = 1; } else { // Aim for 10x10 grid or so. iGCPStepX = std::max(static_cast<int32>(1), ((nXPoints - 1) / 11)); iGCPStepY = std::max(static_cast<int32>(1), ((nYPoints - 1) / 11)); } /* -------------------------------------------------------------------- */ /* Fetch projection information for various datasets. */ /* -------------------------------------------------------------------- */ if( nLatCount && nLongCount && nLatCount == nLongCount && pLat && pLong ) { CPLFree( pszGCPProjection ); pszGCPProjection = NULL; // ASTER Level 1A if( eProduct == PROD_ASTER_L1A ) { pszGCPProjection = CPLStrdup( "GEOGCS[\"WGS 84\",DATUM[\"WGS_1984\",SPHEROID[\"WGS 84\"," "6378137,298.257223563,AUTHORITY[\"EPSG\",\"7030\"]]," "TOWGS84[0,0,0,0,0,0,0],AUTHORITY[\"EPSG\",\"6326\"]]," "PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",\"8901\"]]," "UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\"," "\"9108\"]],AXIS[\"Lat\",NORTH],AXIS[\"Long\",EAST]," "AUTHORITY[\"EPSG\",\"4326\"]]" ); } // ASTER Level 1B, Level 2 else if( eProduct == PROD_ASTER_L1B || eProduct == PROD_ASTER_L2 ) { // Constuct the metadata keys. // A band number is taken from the field name. const char *pszBand = strpbrk( pszFieldName, "0123456789" ); if( !pszBand ) pszBand = ""; char *pszProjLine = CPLStrdup(CPLSPrintf("MPMETHOD%s", pszBand)); char *pszParmsLine = CPLStrdup(CPLSPrintf("PROJECTIONPARAMETERS%s", pszBand)); char *pszZoneLine = CPLStrdup(CPLSPrintf("UTMZONECODE%s", pszBand)); char *pszEllipsoidLine = CPLStrdup(CPLSPrintf("ELLIPSOIDANDDATUM%s", pszBand)); // Fetch projection related values from the // metadata. const char *pszProj = CSLFetchNameValue( papszLocalMetadata, pszProjLine ); const char *pszParms = CSLFetchNameValue( papszLocalMetadata, pszParmsLine ); const char *pszZone = CSLFetchNameValue( papszLocalMetadata, pszZoneLine ); #ifdef DEBUG const char* pszEllipsoid = CSLFetchNameValue( papszLocalMetadata, pszEllipsoidLine ); CPLDebug( "HDF4Image", "Projection %s=%s, parameters %s=%s, " "zone %s=%s", pszProjLine, pszProj, pszParmsLine, pszParms, pszZoneLine, pszZone ); CPLDebug( "HDF4Image", "Ellipsoid %s=%s", pszEllipsoidLine, pszEllipsoid ); #endif // Transform all mnemonic codes in the values. // Projection is UTM by default const long iProjSys = pszProj ? USGSMnemonicToCode(pszProj) : 1L; const long iZone = (pszZone && iProjSys == 1L) ? atoi(pszZone): 0L; #if 0 // Not needed without the WGS84 check. char **papszEllipsoid = (pszEllipsoid) ? CSLTokenizeString2( pszEllipsoid, ",", CSLT_HONOURSTRINGS ) : NULL; #endif const long iEllipsoid = 8L; // WGS84 by default #if 0 // This block is redundant. if( papszEllipsoid && CSLCount(papszEllipsoid) > 0 ) { if (EQUAL( papszEllipsoid[0], "WGS84")) iEllipsoid = 8L; } #endif char **papszParms = pszParms ? CSLTokenizeString2( pszParms, ",", CSLT_HONOURSTRINGS ) : NULL; int nParms = CSLCount(papszParms); if( nParms >= 15 ) nParms = 15; double adfProjParms[15] = {}; for( int i = 0; i < nParms; i++) adfProjParms[i] = CPLAtof( papszParms[i] ); for ( int i = nParms; i < 15; i++) adfProjParms[i] = 0.0; // Create projection definition oSRS.importFromUSGS( iProjSys, iZone, adfProjParms, iEllipsoid ); oSRS.SetLinearUnits( SRS_UL_METER, 1.0 ); oSRS.exportToWkt( &pszGCPProjection ); CSLDestroy( papszParms ); CPLFree( pszEllipsoidLine ); CPLFree( pszZoneLine ); CPLFree( pszParmsLine ); CPLFree( pszProjLine ); } // ASTER Level 3 (DEM) else if( eProduct == PROD_ASTER_L3 ) { double dfCenterX = 0.0; double dfCenterY = 0.0; ReadCoordinates( CSLFetchNameValue( papszGlobalMetadata, "SCENECENTER" ), &dfCenterY, &dfCenterX ); // Calculate UTM zone from scene center coordinates const int iZone = 30 + static_cast<int>( (dfCenterX + 6.0) / 6.0 ); // Create projection definition if( dfCenterY > 0 ) oSRS.SetUTM( iZone, TRUE ); else oSRS.SetUTM( - iZone, FALSE ); oSRS.SetWellKnownGeogCS( "WGS84" ); oSRS.SetLinearUnits( SRS_UL_METER, 1.0 ); oSRS.exportToWkt( &pszGCPProjection ); } // MODIS L1B else if( eProduct == PROD_MODIS_L1B || eProduct == PROD_MODIS_L2 ) { pszGCPProjection = CPLStrdup( SRS_WKT_WGS84 ); } /* -------------------------------------------------------------------- */ /* Fill the GCPs list. */ /* -------------------------------------------------------------------- */ if( iGCPStepX > 0 ) { nGCPCount = (((nXPoints-1) / iGCPStepX) + 1) * (((nYPoints-1) / iGCPStepY) + 1); pasGCPList = reinterpret_cast<GDAL_GCP *>( CPLCalloc( nGCPCount, sizeof( GDAL_GCP ) ) ); GDALInitGCPs( nGCPCount, pasGCPList ); int iGCP = 0; for( int i = 0; i < nYPoints; i += iGCPStepY ) { for( int j = 0; j < nXPoints; j += iGCPStepX ) { const int iGeoOff = i * nXPoints + j; pasGCPList[iGCP].dfGCPX = AnyTypeToDouble( iWrkNumType, reinterpret_cast<void *>( reinterpret_cast<char *>( pLong ) + iGeoOff*iDataSize)); pasGCPList[iGCP].dfGCPY = AnyTypeToDouble( iWrkNumType, reinterpret_cast<void *>( reinterpret_cast<char*>( pLat ) + iGeoOff*iDataSize)); // GCPs in Level 1A/1B dataset are in geocentric // coordinates. Convert them in geodetic (we // will convert latitudes only, longitudes // do not need to be converted, because // they are the same). // This calculation valid for WGS84 datum only. if( eProduct == PROD_ASTER_L1A || eProduct == PROD_ASTER_L1B ) { pasGCPList[iGCP].dfGCPY = atan(tan(pasGCPList[iGCP].dfGCPY *PI/180)/0.99330562)*180/PI; } ToGeoref(&pasGCPList[iGCP].dfGCPX, &pasGCPList[iGCP].dfGCPY); pasGCPList[iGCP].dfGCPZ = 0.0; if( pLatticeX && pLatticeY ) { pasGCPList[iGCP].dfGCPPixel = AnyTypeToDouble( iLatticeType, reinterpret_cast<void *>( reinterpret_cast<char *>( pLatticeX ) + iGeoOff*iLatticeDataSize ) ) + 0.5; pasGCPList[iGCP].dfGCPLine = AnyTypeToDouble( iLatticeType, reinterpret_cast<void *>( reinterpret_cast<char *>( pLatticeY ) + iGeoOff*iLatticeDataSize ) ) + 0.5; } else if( paiOffset && paiIncrement ) { pasGCPList[iGCP].dfGCPPixel = paiOffset[iPixelDim] + j * paiIncrement[iPixelDim] + 0.5; pasGCPList[iGCP].dfGCPLine = paiOffset[iLineDim] + i * paiIncrement[iLineDim] + 0.5; } iGCP++; } } } /* -------------------------------------------------------------------- */ /* Establish geolocation metadata, but only if there is no */ /* lattice. The lattice destroys the regularity of the grid. */ /* -------------------------------------------------------------------- */ if( pLatticeX == NULL && iLatDim != -1 && iLongDim != -1 && iPixelDim != -1 && iLineDim != -1 ) { SetMetadataItem( "SRS", pszGCPProjection, "GEOLOCATION" ); CPLString osWrk; osWrk.Printf( "HDF4_EOS:EOS_SWATH_GEOL:\"%s\":%s:%s", pszFilename, pszSubdatasetName, papszGeolocations[iLongDim] ); SetMetadataItem( "X_DATASET", osWrk, "GEOLOCATION" ); SetMetadataItem( "X_BAND", "1" , "GEOLOCATION" ); osWrk.Printf( "HDF4_EOS:EOS_SWATH_GEOL:\"%s\":%s:%s", pszFilename, pszSubdatasetName, papszGeolocations[iLatDim] ); SetMetadataItem( "Y_DATASET", osWrk, "GEOLOCATION" ); SetMetadataItem( "Y_BAND", "1" , "GEOLOCATION" ); if( paiOffset && paiIncrement ) { osWrk.Printf( "%ld", static_cast<long>( paiOffset[iPixelDim] ) ); SetMetadataItem( "PIXEL_OFFSET", osWrk, "GEOLOCATION" ); osWrk.Printf( "%ld", static_cast<long>( paiIncrement[iPixelDim] ) ); SetMetadataItem( "PIXEL_STEP", osWrk, "GEOLOCATION" ); osWrk.Printf( "%ld", static_cast<long>( paiOffset[iLineDim] ) ); SetMetadataItem( "LINE_OFFSET", osWrk, "GEOLOCATION" ); osWrk.Printf( "%ld", static_cast<long>( paiIncrement[iLineDim] ) ); SetMetadataItem( "LINE_STEP", osWrk, "GEOLOCATION" ); } } /* -------------------------------------------------------------------- */ /* Cleanup */ /* -------------------------------------------------------------------- */ CPLFree( pLatticeX ); CPLFree( pLatticeY ); CPLFree( pLat ); CPLFree( pLong ); if( iGCPStepX == 0 ) { CPLFree( pszGCPProjection ); pszGCPProjection = NULL; } } /* -------------------------------------------------------------------- */ /* Cleanup */ /* -------------------------------------------------------------------- */ CPLFree( paiOffset ); CPLFree( paiIncrement ); CPLFree( pszGeoList ); CSLDestroy( papszGeolocations ); return TRUE; } /************************************************************************/ /* Open() */ /************************************************************************/ GDALDataset *HDF4ImageDataset::Open( GDALOpenInfo * poOpenInfo ) { if( !STARTS_WITH_CI(poOpenInfo->pszFilename, "HDF4_SDS:") && !STARTS_WITH_CI(poOpenInfo->pszFilename, "HDF4_GR:") && !STARTS_WITH_CI(poOpenInfo->pszFilename, "HDF4_GD:") && !STARTS_WITH_CI(poOpenInfo->pszFilename, "HDF4_EOS:") ) return NULL; /* -------------------------------------------------------------------- */ /* Create a corresponding GDALDataset. */ /* -------------------------------------------------------------------- */ if( poOpenInfo->fpL != NULL ) { VSIFCloseL(poOpenInfo->fpL); poOpenInfo->fpL = NULL; } HDF4ImageDataset *poDS = new HDF4ImageDataset( ); CPLMutexHolderD(&hHDF4Mutex); char **papszSubdatasetName = CSLTokenizeString2( poOpenInfo->pszFilename, ":", CSLT_HONOURSTRINGS | CSLT_PRESERVEESCAPES); if( CSLCount( papszSubdatasetName ) != 4 && CSLCount( papszSubdatasetName ) != 5 && CSLCount( papszSubdatasetName ) != 6 ) { CSLDestroy( papszSubdatasetName ); // Release mutex otherwise we deadlock with GDALDataset own mutex. CPLReleaseMutex(hHDF4Mutex); delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } /* -------------------------------------------------------------------- */ /* Check for drive name in windows HDF4:"D:\... */ /* -------------------------------------------------------------------- */ if( strlen(papszSubdatasetName[2]) == 1 ) { const size_t nLen = 2 + strlen(papszSubdatasetName[3]) + 1; char* pszFilename = reinterpret_cast<char *>( CPLMalloc( nLen ) ); snprintf(pszFilename, nLen, "%s:%s", papszSubdatasetName[2], papszSubdatasetName[3]); CPLFree(papszSubdatasetName[2]); CPLFree(papszSubdatasetName[3]); papszSubdatasetName[2] = pszFilename; /* Move following arguments one rank upper */ papszSubdatasetName[3] = papszSubdatasetName[4]; if( papszSubdatasetName[4] != NULL ) { papszSubdatasetName[4] = papszSubdatasetName[5]; papszSubdatasetName[5] = NULL; } } poDS->pszFilename = CPLStrdup( papszSubdatasetName[2] ); if( EQUAL( papszSubdatasetName[0], "HDF4_SDS" ) ) poDS->iDatasetType = HDF4_SDS; else if( EQUAL( papszSubdatasetName[0], "HDF4_GR" ) ) poDS->iDatasetType = HDF4_GR; else if( EQUAL( papszSubdatasetName[0], "HDF4_EOS" ) ) poDS->iDatasetType = HDF4_EOS; else poDS->iDatasetType = HDF4_UNKNOWN; if( EQUAL( papszSubdatasetName[1], "GDAL_HDF4" ) ) poDS->iSubdatasetType = H4ST_GDAL; else if( EQUAL( papszSubdatasetName[1], "EOS_GRID" ) ) poDS->iSubdatasetType = H4ST_EOS_GRID; else if( EQUAL( papszSubdatasetName[1], "EOS_SWATH" ) ) poDS->iSubdatasetType = H4ST_EOS_SWATH; else if( EQUAL( papszSubdatasetName[1], "EOS_SWATH_GEOL" ) ) poDS->iSubdatasetType = H4ST_EOS_SWATH_GEOL; else if( EQUAL( papszSubdatasetName[1], "SEAWIFS_L3" ) ) poDS->iSubdatasetType= H4ST_SEAWIFS_L3; else if( EQUAL( papszSubdatasetName[1], "HYPERION_L1" ) ) poDS->iSubdatasetType= H4ST_HYPERION_L1; else poDS->iSubdatasetType = H4ST_UNKNOWN; /* -------------------------------------------------------------------- */ /* Is our file still here? */ /* -------------------------------------------------------------------- */ if( !Hishdf( poDS->pszFilename ) ) { CSLDestroy( papszSubdatasetName ); // Release mutex otherwise we deadlock with GDALDataset own mutex. CPLReleaseMutex(hHDF4Mutex); delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } /* -------------------------------------------------------------------- */ /* Collect the remain (post filename) components to treat as */ /* the subdataset name. */ /* -------------------------------------------------------------------- */ CPLString osSubdatasetName = papszSubdatasetName[3]; if( papszSubdatasetName[4] != NULL ) { osSubdatasetName += ":"; osSubdatasetName += papszSubdatasetName[4]; } /* -------------------------------------------------------------------- */ /* Try opening the dataset. */ /* -------------------------------------------------------------------- */ double dfNoData = 0.0; double dfScale = 1.0; double dfOffset = 0.0; bool bNoDataSet = false; bool bHaveScale = false; bool bHaveOffset = false; const char *pszUnits = NULL; const char *pszDescription = NULL; /* -------------------------------------------------------------------- */ /* Select SDS or GR to read from. */ /* -------------------------------------------------------------------- */ if( poDS->iDatasetType == HDF4_EOS ) { if( papszSubdatasetName[4] == NULL ) { // Release mutex. Otherwise it will deadlock with GDALDataset's own // mutex. CPLReleaseMutex(hHDF4Mutex); delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } poDS->pszSubdatasetName = CPLStrdup( papszSubdatasetName[3] ); poDS->pszFieldName = CPLStrdup( papszSubdatasetName[4] ); } else { poDS->iDataset = atoi( papszSubdatasetName[3] ); } CSLDestroy( papszSubdatasetName ); switch ( poDS->iDatasetType ) { case HDF4_EOS: { switch ( poDS->iSubdatasetType ) { /* -------------------------------------------------------------------- */ /* HDF-EOS Swath. */ /* -------------------------------------------------------------------- */ case H4ST_EOS_SWATH: case H4ST_EOS_SWATH_GEOL: { if( poOpenInfo->eAccess == GA_ReadOnly ) poDS->hHDF4 = SWopen( poDS->pszFilename, DFACC_READ ); else poDS->hHDF4 = SWopen( poDS->pszFilename, DFACC_WRITE ); if( poDS->hHDF4 <= 0 ) { CPLDebug( "HDF4Image", "Can't open file \"%s\" for swath reading", poDS->pszFilename ); // Release mutex otherwise we deadlock with GDALDataset own // mutex. CPLReleaseMutex(hHDF4Mutex); delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } const int32 hSW = SWattach( poDS->hHDF4, poDS->pszSubdatasetName ); if( hSW < 0 ) { CPLDebug( "HDF4Image", "Can't attach to subdataset %s", poDS->pszSubdatasetName ); // Release mutex otherwise we deadlock with GDALDataset own // mutex. CPLReleaseMutex(hHDF4Mutex); delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } /* -------------------------------------------------------------------- */ /* Decode the dimension map. */ /* -------------------------------------------------------------------- */ int32 nStrBufSize = 0; if( SWnentries( hSW, HDFE_NENTDIM, &nStrBufSize ) < 0 || nStrBufSize <= 0 ) { CPLDebug( "HDF4Image", "Can't read a number of dimension maps." ); // Release mutex otherwise we deadlock with GDALDataset own // mutex. CPLReleaseMutex(hHDF4Mutex); delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } char *pszDimList = reinterpret_cast<char *>( CPLMalloc( nStrBufSize + 1 ) ); if( SWfieldinfo( hSW, poDS->pszFieldName, &poDS->iRank, poDS->aiDimSizes, &poDS->iNumType, pszDimList ) < 0 ) { CPLDebug( "HDF4Image", "Can't read dimension maps." ); CPLFree( pszDimList ); // Release mutex otherwise we deadlock with GDALDataset own // mutex. CPLReleaseMutex(hHDF4Mutex); delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } pszDimList[nStrBufSize] = '\0'; #ifdef DEBUG CPLDebug( "HDF4Image", "List of dimensions in swath \"%s\": %s", poDS->pszFieldName, pszDimList ); #endif poDS->GetImageDimensions( pszDimList ); #ifdef DEBUG CPLDebug( "HDF4Image", "X dimension is %d, Y dimension is %d", poDS->iXDim, poDS->iYDim ); #endif /* -------------------------------------------------------------------- */ /* Fetch metadata. */ /* -------------------------------------------------------------------- */ // Not H4ST_EOS_SWATH_GEOL. if( poDS->iSubdatasetType == H4ST_EOS_SWATH ) poDS->GetSwatAttrs( hSW ); /* -------------------------------------------------------------------- */ /* Fetch NODATA value. */ /* -------------------------------------------------------------------- */ void *pNoDataValue = CPLMalloc( poDS->GetDataTypeSize(poDS->iNumType) ); if( SWgetfillvalue( hSW, poDS->pszFieldName, pNoDataValue ) != -1 ) { dfNoData = poDS->AnyTypeToDouble( poDS->iNumType, pNoDataValue ); bNoDataSet = true; } else { const char *pszNoData = CSLFetchNameValue( poDS->papszLocalMetadata, "_FillValue" ); if( pszNoData ) { dfNoData = CPLAtof( pszNoData ); bNoDataSet = true; } } CPLFree( pNoDataValue ); /* -------------------------------------------------------------------- */ /* Handle Geolocation processing. */ /* -------------------------------------------------------------------- */ // Not H4ST_SWATH_GEOL. if( poDS->iSubdatasetType == H4ST_EOS_SWATH ) { char **papszDimList = CSLTokenizeString2( pszDimList, ",", CSLT_HONOURSTRINGS ); if( !poDS->ProcessSwathGeolocation( hSW, papszDimList ) ) { CPLDebug( "HDF4Image", "No geolocation available for this swath." ); } CSLDestroy( papszDimList ); } /* -------------------------------------------------------------------- */ /* Cleanup. */ /* -------------------------------------------------------------------- */ CPLFree( pszDimList ); SWdetach( hSW ); } break; /* -------------------------------------------------------------------- */ /* HDF-EOS Grid. */ /* -------------------------------------------------------------------- */ case H4ST_EOS_GRID: { if( poOpenInfo->eAccess == GA_ReadOnly ) poDS->hHDF4 = GDopen( poDS->pszFilename, DFACC_READ ); else poDS->hHDF4 = GDopen( poDS->pszFilename, DFACC_WRITE ); if( poDS->hHDF4 <= 0 ) { CPLDebug( "HDF4Image", "Can't open file \"%s\" for grid reading", poDS->pszFilename ); // Release mutex otherwise we deadlock with GDALDataset own // mutex. CPLReleaseMutex(hHDF4Mutex); delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } const int32 hGD = GDattach( poDS->hHDF4, poDS->pszSubdatasetName ); /* -------------------------------------------------------------------- */ /* Decode the dimension map. */ /* -------------------------------------------------------------------- */ char szDimList[N_BUF_SIZE] = {}; GDfieldinfo( hGD, poDS->pszFieldName, &poDS->iRank, poDS->aiDimSizes, &poDS->iNumType, szDimList ); #ifdef DEBUG CPLDebug( "HDF4Image", "List of dimensions in grid %s: %s", poDS->pszFieldName, szDimList); #endif poDS->GetImageDimensions( szDimList ); int32 tilecode = 0; int32 tilerank = 0; if( GDtileinfo( hGD, poDS->pszFieldName, &tilecode, &tilerank, NULL ) == 0 ) { if( tilecode == HDFE_TILE ) { int32 *tiledims = reinterpret_cast<int32 *>( CPLCalloc( tilerank , sizeof( int32 ) ) ); GDtileinfo( hGD, poDS->pszFieldName, &tilecode, &tilerank, tiledims ); if( ( tilerank == 2 ) && ( poDS->iRank == tilerank ) ) { poDS->nBlockPreferredXSize = tiledims[1]; poDS->nBlockPreferredYSize = tiledims[0]; poDS->bReadTile = true; #ifdef DEBUG CPLDebug( "HDF4_EOS:EOS_GRID:", "tilerank in grid %s: %d", poDS->pszFieldName, static_cast<int>( tilerank ) ); CPLDebug( "HDF4_EOS:EOS_GRID:", "tiledimens in grid %s: %d,%d", poDS->pszFieldName, static_cast<int>( tiledims[0] ), static_cast<int>( tiledims[1] ) ); #endif } #ifdef DEBUG else { CPLDebug( "HDF4_EOS:EOS_GRID:", "tilerank in grid %s: %d not supported", poDS->pszFieldName, static_cast<int>( tilerank ) ); } #endif CPLFree(tiledims); } else { #ifdef DEBUG CPLDebug( "HDF4_EOS:EOS_GRID:", "tilecode == HDFE_NOTILE in grid %s: %d", poDS->pszFieldName , static_cast<int>( poDS->iRank ) ); #endif } } #ifdef DEBUG else { CPLDebug( "HDF4_EOS:EOS_GRID:", "ERROR GDtileinfo %s", poDS->pszFieldName ); } #endif /* -------------------------------------------------------------------- */ /* Fetch projection information */ /* -------------------------------------------------------------------- */ int32 iProjCode = 0; int32 iZoneCode = 0; int32 iSphereCode = 0; double adfProjParms[15]; if( GDprojinfo( hGD, &iProjCode, &iZoneCode, &iSphereCode, adfProjParms) >= 0 ) { #ifdef DEBUG CPLDebug( "HDF4Image", "Grid projection: " "projection code: %ld, zone code %ld, " "sphere code %ld", static_cast<long>( iProjCode ), static_cast<long>( iZoneCode ), static_cast<long>( iSphereCode ) ); #endif poDS->oSRS.importFromUSGS( iProjCode, iZoneCode, adfProjParms, iSphereCode, USGS_ANGLE_RADIANS ); CPLFree( poDS->pszProjection ); poDS->oSRS.exportToWkt( &poDS->pszProjection ); } /* -------------------------------------------------------------------- */ /* Fetch geotransformation matrix */ /* -------------------------------------------------------------------- */ int32 nXSize = 0; int32 nYSize = 0; double adfUpLeft[2]; double adfLowRight[2]; if( GDgridinfo( hGD, &nXSize, &nYSize, adfUpLeft, adfLowRight ) >= 0 ) { #ifdef DEBUG CPLDebug( "HDF4Image", "Grid geolocation: " "top left X %f, top left Y %f, " "low right X %f, low right Y %f, " "cols %ld, rows %ld", adfUpLeft[0], adfUpLeft[1], adfLowRight[0], adfLowRight[1], static_cast<long>( nXSize ), static_cast<long>( nYSize ) ); #endif if( iProjCode ) { // For projected systems coordinates are in meters. poDS->adfGeoTransform[1] = (adfLowRight[0] - adfUpLeft[0]) / nXSize; poDS->adfGeoTransform[5] = (adfLowRight[1] - adfUpLeft[1]) / nYSize; poDS->adfGeoTransform[0] = adfUpLeft[0]; poDS->adfGeoTransform[3] = adfUpLeft[1]; } else { // Handle angular geographic coordinates here. poDS->adfGeoTransform[1] = (CPLPackedDMSToDec(adfLowRight[0]) - CPLPackedDMSToDec(adfUpLeft[0])) / nXSize; poDS->adfGeoTransform[5] = (CPLPackedDMSToDec(adfLowRight[1]) - CPLPackedDMSToDec(adfUpLeft[1])) / nYSize; poDS->adfGeoTransform[0] = CPLPackedDMSToDec(adfUpLeft[0]); poDS->adfGeoTransform[3] = CPLPackedDMSToDec(adfUpLeft[1]); } poDS->adfGeoTransform[2] = 0.0; poDS->adfGeoTransform[4] = 0.0; poDS->bHasGeoTransform = true; } /* -------------------------------------------------------------------- */ /* Fetch metadata. */ /* -------------------------------------------------------------------- */ poDS->GetGridAttrs( hGD ); GDdetach( hGD ); /* -------------------------------------------------------------------- */ /* Fetch NODATA value. */ /* -------------------------------------------------------------------- */ void *pNoDataValue = CPLMalloc( poDS->GetDataTypeSize(poDS->iNumType) ); if( GDgetfillvalue( hGD, poDS->pszFieldName, pNoDataValue ) != -1 ) { dfNoData = poDS->AnyTypeToDouble( poDS->iNumType, pNoDataValue ); bNoDataSet = true; } else { const char *pszNoData = CSLFetchNameValue( poDS->papszLocalMetadata, "_FillValue" ); if( pszNoData ) { dfNoData = CPLAtof( pszNoData ); bNoDataSet = true; } } CPLFree( pNoDataValue ); } break; default: break; } /* -------------------------------------------------------------------- */ /* Fetch unit type, scale, offset and description */ /* Should be similar among various HDF-EOS kinds. */ /* -------------------------------------------------------------------- */ { const char *pszTmp = CSLFetchNameValue( poDS->papszLocalMetadata, "scale_factor" ); if( pszTmp ) { dfScale = CPLAtof( pszTmp ); // Some producers (i.e. lndcsm from LEDAPS) emit // files with scale_factor=0 which is crazy to carry // through. if( dfScale == 0.0 ) dfScale = 1.0; bHaveScale = (dfScale != 0.0); } pszTmp = CSLFetchNameValue( poDS->papszLocalMetadata, "add_offset" ); if( pszTmp ) { dfOffset = CPLAtof( pszTmp ); bHaveOffset = true; } pszUnits = CSLFetchNameValue( poDS->papszLocalMetadata, "units" ); pszDescription = CSLFetchNameValue( poDS->papszLocalMetadata, "long_name" ); } } break; /* -------------------------------------------------------------------- */ /* 'Plain' HDF scientific datasets. */ /* -------------------------------------------------------------------- */ case HDF4_SDS: { #ifdef HDF4_HAS_MAXOPENFILES // Attempt to increase maximum number of opened HDF files intn nCurrMax = 0; intn nSysLimit = 0; if( SDget_maxopenfiles(&nCurrMax, &nSysLimit) >= 0 && nCurrMax < nSysLimit ) { SDreset_maxopenfiles( nSysLimit ); } #endif // HDF4_HAS_MAXOPENFILES if( poOpenInfo->eAccess == GA_ReadOnly ) poDS->hHDF4 = Hopen( poDS->pszFilename, DFACC_READ, 0 ); else poDS->hHDF4 = Hopen( poDS->pszFilename, DFACC_WRITE, 0 ); if( poDS->hHDF4 <= 0 ) { // Release mutex otherwise we deadlock with GDALDataset own mutex. CPLReleaseMutex(hHDF4Mutex); delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } poDS->hSD = SDstart( poDS->pszFilename, DFACC_READ ); if( poDS->hSD == -1 ) { // Release mutex otherwise we deadlock with GDALDataset own mutex. CPLReleaseMutex(hHDF4Mutex); delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } if( poDS->ReadGlobalAttributes( poDS->hSD ) != CE_None ) { // Release mutex otherwise we deadlock with GDALDataset own mutex. CPLReleaseMutex(hHDF4Mutex); delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } int32 nDatasets = 0; int32 l_nAttrs = 0; if( SDfileinfo( poDS->hSD, &nDatasets, &l_nAttrs ) != 0 ) { // Release mutex otherwise we deadlock with GDALDataset own mutex. CPLReleaseMutex(hHDF4Mutex); delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } if( poDS->iDataset < 0 || poDS->iDataset >= nDatasets ) { CPLError(CE_Failure, CPLE_AppDefined, "Subdataset index should be between 0 and %ld", static_cast<long int>( nDatasets ) - 1); // Release mutex otherwise we deadlock with GDALDataset own mutex. CPLReleaseMutex(hHDF4Mutex); delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } memset( poDS->aiDimSizes, 0, sizeof(int32) * H4_MAX_VAR_DIMS ); const int32 iSDS = SDselect( poDS->hSD, poDS->iDataset ); SDgetinfo( iSDS, poDS->szName, &poDS->iRank, poDS->aiDimSizes, &poDS->iNumType, &poDS->nAttrs); // We will duplicate global metadata for every subdataset. poDS->papszLocalMetadata = CSLDuplicate( poDS->papszGlobalMetadata ); for( int32 iAttribute = 0; iAttribute < poDS->nAttrs; iAttribute++ ) { char szAttrName[H4_MAX_NC_NAME] = {}; int32 iAttrNumType = 0; int32 nValues = 0; SDattrinfo( iSDS, iAttribute, szAttrName, &iAttrNumType, &nValues ); poDS->papszLocalMetadata = poDS->TranslateHDF4Attributes( iSDS, iAttribute, szAttrName, iAttrNumType, nValues, poDS->papszLocalMetadata ); } poDS->SetMetadata( poDS->papszLocalMetadata, "" ); SDendaccess( iSDS ); #ifdef DEBUG CPLDebug( "HDF4Image", "aiDimSizes[0]=%ld, aiDimSizes[1]=%ld, " "aiDimSizes[2]=%ld, aiDimSizes[3]=%ld", static_cast<long>( poDS->aiDimSizes[0] ), static_cast<long>( poDS->aiDimSizes[1] ), static_cast<long>( poDS->aiDimSizes[2] ), static_cast<long>( poDS->aiDimSizes[3] ) ); #endif switch( poDS->iRank ) { case 1: poDS->nBandCount = 1; poDS->iXDim = 0; poDS->iYDim = -1; break; case 2: poDS->nBandCount = 1; poDS->iXDim = 1; poDS->iYDim = 0; break; case 3: // TODO: We should probably remove the following test as there are // valid datasets where the height is lower than the band number. // For example: // http://www.iapmw.unibe.ch/research/projects/FriOWL/data/otd/LISOTD_HRAC_V2.2.hdf // which is a 720x360 x 365 bands. // Use a HACK for now. if( poDS->aiDimSizes[0] < poDS->aiDimSizes[2] && !(poDS->aiDimSizes[0] == 360 && poDS->aiDimSizes[1] == 720 && poDS->aiDimSizes[2] == 365) ) { poDS->iBandDim = 0; poDS->iXDim = 2; poDS->iYDim = 1; } else { if( poDS->aiDimSizes[1] <= poDS->aiDimSizes[0] && poDS->aiDimSizes[1] <= poDS->aiDimSizes[2] ) { poDS->iBandDim = 1; poDS->iXDim = 2; poDS->iYDim = 0; } else { poDS->iBandDim = 2; poDS->iXDim = 1; poDS->iYDim = 0; } } poDS->nBandCount = poDS->aiDimSizes[poDS->iBandDim]; break; case 4: // FIXME poDS->nBandCount = poDS->aiDimSizes[2] * poDS->aiDimSizes[3]; break; default: break; } // We preset this because CaptureNRLGeoTransform needs it. poDS->nRasterXSize = poDS->aiDimSizes[poDS->iXDim]; if( poDS->iYDim >= 0 ) poDS->nRasterYSize = poDS->aiDimSizes[poDS->iYDim]; else poDS->nRasterYSize = 1; // Special case projection info for NRL generated files. const char *pszMapProjectionSystem = CSLFetchNameValue(poDS->papszGlobalMetadata, "mapProjectionSystem"); if( pszMapProjectionSystem != NULL && EQUAL(pszMapProjectionSystem,"NRL(USGS)") ) { poDS->CaptureNRLGeoTransform(); } // Special case for coastwatch hdf files. if( CSLFetchNameValue( poDS->papszGlobalMetadata, "gctp_sys" ) != NULL ) poDS->CaptureCoastwatchGCTPInfo(); // Special case for MODIS geolocation poDS->ProcessModisSDSGeolocation(); // Special case for NASA/CCRS Landsat in HDF poDS->CaptureL1GMTLInfo(); } break; /* -------------------------------------------------------------------- */ /* 'Plain' HDF rasters. */ /* -------------------------------------------------------------------- */ case HDF4_GR: { // Attempt to increase maximum number of opened HDF files. #ifdef HDF4_HAS_MAXOPENFILES intn nCurrMax = 0; intn nSysLimit = 0; if( SDget_maxopenfiles(&nCurrMax, &nSysLimit) >= 0 && nCurrMax < nSysLimit ) { SDreset_maxopenfiles( nSysLimit ); } #endif // HDF4_HAS_MAXOPENFILES if( poOpenInfo->eAccess == GA_ReadOnly ) poDS->hHDF4 = Hopen( poDS->pszFilename, DFACC_READ, 0 ); else poDS->hHDF4 = Hopen( poDS->pszFilename, DFACC_WRITE, 0 ); if( poDS->hHDF4 <= 0 ) { // Release mutex otherwise we deadlock with GDALDataset own mutex. CPLReleaseMutex(hHDF4Mutex); delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } poDS->hGR = GRstart( poDS->hHDF4 ); if( poDS->hGR == -1 ) { // Release mutex otherwise wel deadlock with GDALDataset own mutex. CPLReleaseMutex(hHDF4Mutex); delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } poDS->iGR = GRselect( poDS->hGR, poDS->iDataset ); if( GRgetiminfo( poDS->iGR, poDS->szName, &poDS->iRank, &poDS->iNumType, &poDS->iInterlaceMode, poDS->aiDimSizes, &poDS->nAttrs ) != 0 ) { // Release mutex otherwise we deadlock with GDALDataset own mutex. CPLReleaseMutex(hHDF4Mutex); delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } // We will duplicate global metadata for every subdataset. poDS->papszLocalMetadata = CSLDuplicate( poDS->papszGlobalMetadata ); for( int32 iAttribute = 0; iAttribute < poDS->nAttrs; iAttribute++ ) { char szAttrName[H4_MAX_NC_NAME] = {}; int32 nValues = 0; int32 iAttrNumType = 0; GRattrinfo( poDS->iGR, iAttribute, szAttrName, &iAttrNumType, &nValues ); poDS->papszLocalMetadata = poDS->TranslateHDF4Attributes( poDS->iGR, iAttribute, szAttrName, iAttrNumType, nValues, poDS->papszLocalMetadata ); } poDS->SetMetadata( poDS->papszLocalMetadata, "" ); // Read colour table poDS->iPal = GRgetlutid ( poDS->iGR, poDS->iDataset ); if( poDS->iPal != -1 ) { GRgetlutinfo( poDS->iPal, &poDS->nComps, &poDS->iPalDataType, &poDS->iPalInterlaceMode, &poDS->nPalEntries ); GRreadlut( poDS->iPal, poDS->aiPaletteData ); poDS->poColorTable = new GDALColorTable(); GDALColorEntry oEntry; for( int i = 0; i < N_COLOR_ENTRIES; i++ ) { oEntry.c1 = poDS->aiPaletteData[i][0]; oEntry.c2 = poDS->aiPaletteData[i][1]; oEntry.c3 = poDS->aiPaletteData[i][2]; oEntry.c4 = 255; poDS->poColorTable->SetColorEntry( i, &oEntry ); } } poDS->iXDim = 0; poDS->iYDim = 1; poDS->nBandCount = poDS->iRank; break; } default: // Release mutex otherwise we'll deadlock with GDALDataset own mutex CPLReleaseMutex(hHDF4Mutex); delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } poDS->nRasterXSize = poDS->aiDimSizes[poDS->iXDim]; if( poDS->iYDim >= 0 ) poDS->nRasterYSize = poDS->aiDimSizes[poDS->iYDim]; else poDS->nRasterYSize = 1; if( poDS->iSubdatasetType == H4ST_HYPERION_L1 ) { // XXX: Hyperion SDSs has Height x Bands x Width dimensions scheme if( poDS->iRank > 2 ) { poDS->nBandCount = poDS->aiDimSizes[1]; poDS->nRasterXSize = poDS->aiDimSizes[2]; poDS->nRasterYSize = poDS->aiDimSizes[0]; } else { poDS->nBandCount = poDS->aiDimSizes[0]; poDS->nRasterXSize = poDS->aiDimSizes[1]; poDS->nRasterYSize = 1; } } /* -------------------------------------------------------------------- */ /* Create band information objects. */ /* -------------------------------------------------------------------- */ for( int i = 1; i <= poDS->nBandCount; i++ ) { HDF4ImageRasterBand *poBand = new HDF4ImageRasterBand( poDS, i, poDS->GetDataType( poDS->iNumType ) ); poDS->SetBand( i, poBand ); if( bNoDataSet ) poBand->SetNoDataValue( dfNoData ); if( bHaveScale ) { poBand->bHaveScale = true; poBand->dfScale = dfScale; } if( bHaveOffset ) { poBand->bHaveOffset = true; poBand->dfOffset = dfOffset; } if( pszUnits ) poBand->osUnitType = pszUnits; if( pszDescription ) poBand->SetDescription( pszDescription ); } /* -------------------------------------------------------------------- */ /* Now we will handle particular types of HDF products. Every */ /* HDF product has its own structure. */ /* -------------------------------------------------------------------- */ switch ( poDS->iSubdatasetType ) { /* -------------------------------------------------------------------- */ /* HDF, created by GDAL. */ /* -------------------------------------------------------------------- */ case H4ST_GDAL: { CPLDebug( "HDF4Image", "Input dataset interpreted as GDAL_HDF4" ); const char *pszValue = CSLFetchNameValue( poDS->papszGlobalMetadata, "Projection" ); if( pszValue != NULL ) { CPLFree( poDS->pszProjection ); poDS->pszProjection = CPLStrdup( pszValue ); } if( (pszValue = CSLFetchNameValue(poDS->papszGlobalMetadata, "TransformationMatrix")) != NULL ) { int i = 0; char *pszString = const_cast<char *>( pszValue ); while( *pszValue && i < 6 ) { poDS->adfGeoTransform[i++] = CPLStrtod(pszString, &pszString); pszString++; } poDS->bHasGeoTransform = true; } for( int i = 1; i <= poDS->nBands; i++ ) { if( (pszValue = CSLFetchNameValue(poDS->papszGlobalMetadata, CPLSPrintf("BandDesc%d", i))) != NULL ) poDS->GetRasterBand( i )->SetDescription( pszValue ); } for( int i = 1; i <= poDS->nBands; i++ ) { if( (pszValue = CSLFetchNameValue(poDS->papszGlobalMetadata, CPLSPrintf("NoDataValue%d", i))) != NULL ) poDS->GetRasterBand(i)->SetNoDataValue( CPLAtof(pszValue) ); } } break; /* -------------------------------------------------------------------- */ /* SeaWiFS Level 3 Standard Mapped Image Products. */ /* Organized similar to MODIS Level 3 products. */ /* -------------------------------------------------------------------- */ case H4ST_SEAWIFS_L3: { CPLDebug( "HDF4Image", "Input dataset interpreted as SEAWIFS_L3" ); // Read band description for ( int i = 1; i <= poDS->nBands; i++ ) { poDS->GetRasterBand( i )->SetDescription( CSLFetchNameValue( poDS->papszGlobalMetadata, "Parameter" ) ); } // Read coordinate system and geotransform matrix. poDS->oSRS.SetWellKnownGeogCS( "WGS84" ); if( EQUAL(CSLFetchNameValue(poDS->papszGlobalMetadata, "Map Projection"), "Equidistant Cylindrical") ) { poDS->oSRS.SetEquirectangular( 0.0, 0.0, 0.0, 0.0 ); poDS->oSRS.SetLinearUnits( SRS_UL_METER, 1 ); CPLFree( poDS->pszProjection ); poDS->oSRS.exportToWkt( &poDS->pszProjection ); } double dfULX = CPLAtof( CSLFetchNameValue(poDS->papszGlobalMetadata, "Westernmost Longitude") ); double dfULY = CPLAtof( CSLFetchNameValue(poDS->papszGlobalMetadata, "Northernmost Latitude") ); double dfLRX = CPLAtof( CSLFetchNameValue(poDS->papszGlobalMetadata, "Easternmost Longitude") ); double dfLRY = CPLAtof( CSLFetchNameValue(poDS->papszGlobalMetadata, "Southernmost Latitude") ); poDS->ToGeoref( &dfULX, &dfULY ); poDS->ToGeoref( &dfLRX, &dfLRY ); poDS->adfGeoTransform[0] = dfULX; poDS->adfGeoTransform[3] = dfULY; poDS->adfGeoTransform[1] = (dfLRX - dfULX) / poDS->nRasterXSize; poDS->adfGeoTransform[5] = (dfULY - dfLRY) / poDS->nRasterYSize; if( dfULY > 0) // Northern hemisphere. poDS->adfGeoTransform[5] = - poDS->adfGeoTransform[5]; poDS->adfGeoTransform[2] = 0.0; poDS->adfGeoTransform[4] = 0.0; poDS->bHasGeoTransform = true; } break; /* -------------------------------------------------------------------- */ /* Generic SDS */ /* -------------------------------------------------------------------- */ case H4ST_UNKNOWN: { // This is a coastwatch convention. if( CSLFetchNameValue( poDS->papszLocalMetadata, "missing_value" ) ) { for( int i = 1; i <= poDS->nBands; i++ ) { poDS->GetRasterBand(i)->SetNoDataValue( CPLAtof( CSLFetchNameValue(poDS->papszLocalMetadata, "missing_value") ) ); } } // Coastwatch offset and scale. if( CSLFetchNameValue( poDS->papszLocalMetadata, "scale_factor" ) && CSLFetchNameValue( poDS->papszLocalMetadata, "add_offset" ) ) { for( int i = 1; i <= poDS->nBands; i++ ) { HDF4ImageRasterBand *poBand = reinterpret_cast<HDF4ImageRasterBand *>( poDS->GetRasterBand(i) ); poBand->bHaveScale = true; poBand->bHaveOffset = true; poBand->dfScale = CPLAtof( CSLFetchNameValue( poDS->papszLocalMetadata, "scale_factor" ) ); // See #4891 regarding offset interpretation. // poBand->dfOffset = -1 * poBand->dfScale * // CPLAtof( CSLFetchNameValue( poDS->papszLocalMetadata, // "add_offset" ) ); poBand->dfOffset = CPLAtof( CSLFetchNameValue( poDS->papszLocalMetadata, "add_offset" ) ); } } // This is a modis level3 convention (data from ACT) // e.g. data/hdf/act/modis/MODAM2004280160000.L3_NOAA_GMX if( CSLFetchNameValue( poDS->papszLocalMetadata, "scalingSlope" ) && CSLFetchNameValue( poDS->papszLocalMetadata, "scalingIntercept" ) ) { CPLString osUnits; if( CSLFetchNameValue( poDS->papszLocalMetadata, "productUnits" ) ) { osUnits = CSLFetchNameValue( poDS->papszLocalMetadata, "productUnits" ); } for( int i = 1; i <= poDS->nBands; i++ ) { HDF4ImageRasterBand *poBand = reinterpret_cast<HDF4ImageRasterBand *>( poDS->GetRasterBand(i) ); poBand->bHaveScale = true; poBand->bHaveOffset = true; poBand->dfScale = CPLAtof( CSLFetchNameValue( poDS->papszLocalMetadata, "scalingSlope" ) ); poBand->dfOffset = CPLAtof( CSLFetchNameValue( poDS->papszLocalMetadata, "scalingIntercept" ) ); poBand->osUnitType = osUnits; } } } break; /* -------------------------------------------------------------------- */ /* Hyperion Level 1. */ /* -------------------------------------------------------------------- */ case H4ST_HYPERION_L1: { CPLDebug( "HDF4Image", "Input dataset interpreted as HYPERION_L1" ); } break; default: #ifdef DEBUG_VERBOSE CPLError( CE_Debug, CPLE_AppDefined, "Unknown subdata type %d", poDS->iSubdatasetType ); #endif break; } /* -------------------------------------------------------------------- */ /* Setup PAM info for this subdataset */ /* -------------------------------------------------------------------- */ poDS->SetPhysicalFilename( poDS->pszFilename ); poDS->SetSubdatasetName( osSubdatasetName ); // Release mutex otherwise we'll deadlock with GDALDataset own mutex. CPLReleaseMutex(hHDF4Mutex); poDS->TryLoadXML(); poDS->oOvManager.Initialize( poDS, ":::VIRTUAL:::" ); CPLAcquireMutex(hHDF4Mutex, 1000.0); return poDS; } /************************************************************************/ /* Create() */ /************************************************************************/ GDALDataset *HDF4ImageDataset::Create( const char * pszFilename, int nXSize, int nYSize, int nBands, GDALDataType eType, char **papszOptions ) { /* -------------------------------------------------------------------- */ /* Create the dataset. */ /* -------------------------------------------------------------------- */ if( nBands == 0 ) { CPLError( CE_Failure, CPLE_NotSupported, "Unable to export files with zero bands." ); return NULL; } // Try now to create the file to avoid memory leaks if it is // the SDK that fails to do it. VSILFILE* fpVSIL = VSIFOpenL( pszFilename, "wb" ); if( fpVSIL == NULL ) { CPLError( CE_Failure, CPLE_OpenFailed, "Failed to create %s.", pszFilename ); return NULL; } VSIFCloseL(fpVSIL); VSIUnlink(pszFilename); HDF4ImageDataset *poDS = new HDF4ImageDataset(); CPLMutexHolderD(&hHDF4Mutex); /* -------------------------------------------------------------------- */ /* Choose rank for the created dataset. */ /* -------------------------------------------------------------------- */ poDS->iRank = 3; if( CSLFetchNameValue( papszOptions, "RANK" ) != NULL && EQUAL( CSLFetchNameValue( papszOptions, "RANK" ), "2" ) ) poDS->iRank = 2; poDS->hSD = SDstart( pszFilename, DFACC_CREATE ); if( poDS->hSD == -1 ) { CPLError( CE_Failure, CPLE_OpenFailed, "Can't create HDF4 file %s", pszFilename ); // Release mutex otherwise we'll deadlock with GDALDataset own mutex. CPLReleaseMutex(hHDF4Mutex); delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } poDS->iXDim = 1; poDS->iYDim = 0; poDS->iBandDim = 2; int32 aiDimSizes[H4_MAX_VAR_DIMS] = {}; aiDimSizes[poDS->iXDim] = nXSize; aiDimSizes[poDS->iYDim] = nYSize; aiDimSizes[poDS->iBandDim] = nBands; const char *pszSDSName = NULL; int32 iSDS = -1; if( poDS->iRank == 2 ) { for( int iBand = 0; iBand < nBands; iBand++ ) { pszSDSName = CPLSPrintf( "Band%d", iBand ); switch ( eType ) { case GDT_Float64: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_FLOAT64, poDS->iRank, aiDimSizes ); break; case GDT_Float32: iSDS = SDcreate( poDS-> hSD, pszSDSName, DFNT_FLOAT32, poDS->iRank, aiDimSizes ); break; case GDT_UInt32: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_UINT32, poDS->iRank, aiDimSizes ); break; case GDT_UInt16: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_UINT16, poDS->iRank, aiDimSizes ); break; case GDT_Int32: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_INT32, poDS->iRank, aiDimSizes ); break; case GDT_Int16: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_INT16, poDS->iRank, aiDimSizes ); break; case GDT_Byte: default: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_UINT8, poDS->iRank, aiDimSizes ); break; } SDendaccess( iSDS ); } } else if( poDS->iRank == 3 ) { pszSDSName = "3-dimensional Scientific Dataset"; poDS->iDataset = 0; switch ( eType ) { case GDT_Float64: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_FLOAT64, poDS->iRank, aiDimSizes ); break; case GDT_Float32: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_FLOAT32, poDS->iRank, aiDimSizes ); break; case GDT_UInt32: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_UINT32, poDS->iRank, aiDimSizes ); break; case GDT_UInt16: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_UINT16, poDS->iRank, aiDimSizes ); break; case GDT_Int32: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_INT32, poDS->iRank, aiDimSizes ); break; case GDT_Int16: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_INT16, poDS->iRank, aiDimSizes ); break; case GDT_Byte: default: iSDS = SDcreate( poDS->hSD, pszSDSName, DFNT_UINT8, poDS->iRank, aiDimSizes ); break; } } else { // Should never happen. // Release mutex otherwise we'll deadlock with GDALDataset own mutex. CPLReleaseMutex(hHDF4Mutex); delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } if( iSDS < 0 ) { CPLError( CE_Failure, CPLE_AppDefined, "Can't create SDS with rank %ld for file %s", static_cast<long>( poDS->iRank ), pszFilename ); // Release mutex otherwise we'll deadlock with GDALDataset own mutex. CPLReleaseMutex(hHDF4Mutex); delete poDS; CPLAcquireMutex(hHDF4Mutex, 1000.0); return NULL; } poDS->nRasterXSize = nXSize; poDS->nRasterYSize = nYSize; poDS->eAccess = GA_Update; poDS->iDatasetType = HDF4_SDS; poDS->iSubdatasetType = H4ST_GDAL; poDS->nBands = nBands; /* -------------------------------------------------------------------- */ /* Create band information objects. */ /* -------------------------------------------------------------------- */ for( int iBand = 1; iBand <= nBands; iBand++ ) poDS->SetBand( iBand, new HDF4ImageRasterBand( poDS, iBand, eType ) ); SDsetattr( poDS->hSD, "Signature", DFNT_CHAR8, static_cast<int>(strlen(pszGDALSignature)) + 1, pszGDALSignature ); return reinterpret_cast<GDALDataset *>( poDS ); } /************************************************************************/ /* GDALRegister_HDF4Image() */ /************************************************************************/ void GDALRegister_HDF4Image() { if( GDALGetDriverByName( "HDF4Image" ) != NULL ) return; GDALDriver *poDriver = new GDALDriver(); poDriver->SetDescription( "HDF4Image" ); poDriver->SetMetadataItem( GDAL_DCAP_RASTER, "YES" ); poDriver->SetMetadataItem( GDAL_DMD_LONGNAME, "HDF4 Dataset" ); poDriver->SetMetadataItem( GDAL_DMD_HELPTOPIC, "frmt_hdf4.html" ); poDriver->SetMetadataItem( GDAL_DMD_CREATIONDATATYPES, "Byte Int16 UInt16 Int32 UInt32 " "Float32 Float64" ); poDriver->SetMetadataItem( GDAL_DMD_CREATIONOPTIONLIST, "<CreationOptionList>" " <Option name='RANK' type='int' description='Rank of output SDS'/>" "</CreationOptionList>" ); poDriver->pfnOpen = HDF4ImageDataset::Open; poDriver->pfnCreate = HDF4ImageDataset::Create; GetGDALDriverManager()->RegisterDriver( poDriver ); }